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how often can you apply grubex

by Edwardo Kilback Published 2 years ago Updated 2 years ago

A single application can stop and prevent grubs all season long. Apply during spring or early summer to kill grubs as they develop. Using Scotts® GrubEx®1 Season Long Grub Killer annually can also help control Japanese beetle and Armyworm infestations.

How often should you apply Grub killer?

Grub control pesticides can be applied up 2 to 3 times per year depending on the season and stage in the life cycle of the grubs. Put down grub killers when you see irregular patches of dead grass, and apply preventive treatment early in spring and also during fall to eliminate the pests completely for the next couple of seasons.

What is the best time of year to apply grubex?

Grubex is a natural and safe product that can apply in any season. The best time is when the soil temperature is above 5°C (41°F). The best time to use Grubex is in the fall and spring when grubs are actively feeding. Grubex can be applied anytime after it rains. Grubex can be used for pre-emergent control of white grubs in turfgrass.

How do you treat for grubs with grubex?

Treating with GrubEx. The Scotts Company recommends treating each 1,000 square feet of lawn with 2.87 pounds of GrubEx once yearly. Using a drop or rotary spreader helps broadcast the granular pesticide evenly. After application, water your lawn to a depth of 1/2 inch, which is typically a 20- to 30-minute watering.

Can I apply grubex to a wet lawn?

According to the Scotts GrubEx label, you can apply GrubEx to a wet lawn but for optimum effectiveness, apply the pesticide when the lawn is dry then water it into the soil. Grub Ex will wash down into your soil and disrupt the life cycle of the grubs before they hatch and mature. Can I apply GrubEx before the rain?

Can you apply too much GrubEx?

Applying too much can hurt the environment and using too little may not control the grubs in your lawn. Although Dylox claims it kills grubs within one to three days if applied properly, you may still notice grub activity within that time or shortly after. Animals may also continue digging for the insects.

Can you apply GrubEx twice?

One application between April and mid-summer is enough to kill the next generation of grubs that mature and feed on turf roots during late summer and early fall. However, you can apply Scotts GrubEx twice between April and Mid Summer if: You believe that the GrubEx granules were not watered after application.

How often can you put grub killer on your lawn?

But how often should you apply grub control? Grub control insecticides can be applied up to 2 to 3 times per year depending on the season and stage in the life cycle of the grubs.

What month do I apply GrubEx?

It's important to follow the instructions on the GrubEx packaging very closely because precision in both timing and application are essential. Early May, June and July is the best time to apply this product. Remember the beetles lay eggs in early summer. The small grubs hatch in the middle of the summer.

How long is GrubEx effective?

As a preventive, GrubEx has residual action up to four months after application. However, mature grubs that overwinter from the previous season are typically unaffected by the following season's application.

What time of year do you put down grub control?

The key to controlling grubs is to kill them before they hatch and begin to cause damage to your lawn. In spring or early summer, apply a preventative grub control product, such as Scotts® GrubEx®1 to your lawn, following label directions. This is especially important if you've had problems with grubs in the past.

Will GrubEX get rid of moles?

Grub control is very important to control grubs from damaging your lawn but grub control is NOT mole control. It will reduce their chance of coming into your lawn but it's not guaranteed to get rid of them. Remember - moles are insectivores. There are many tasty critters aside from grubs that they like to snack on.

Can I put down fertilizer and GrubEX at the same time?

Using GrubEx with Fertilizer The site gives no recommendation for mixing straight fertilizer and GrubEx, so it may be wisest to apply one product at a time. Fertilizers mixed with other products such as crabgrass control may be applied two weeks before or two weeks after using GrubEx.

Should I apply GrubEX every year?

A single application can stop and prevent grubs all season long. Apply during spring or early summer to kill grubs as they develop. Using Scotts® GrubEx®1 Season Long Grub Killer annually can also help control Japanese beetle and Armyworm infestations.

Will grub damaged lawn grow back?

Grub counts from six to 10 or more per square foot can damage and kill grass. Before you repair your lawn, treat any grub infestation using beneficial nematodes or pesticides allowed in your area. It is best to repair your grub-damaged lawn in the fall or early spring to restore it to its green glory.

What is the most effective grub killer?

There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. They are short-lived compounds that kill all life stages of grubs. These two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May.

Does grub control need to be watered in?

Do You Still Need to Water GrubEX if it's Applied to a Wet Lawn? Though GrubEX is activated by any amount of moisture, GrubEX still needs to be watered into a lawn after it's applied. This is true even if the lawn was wet before the application of GrubEX. Grubs don't live on the surface.

Can I apply GrubEX and grass seed at the same time?

Yes, you can apply GrubEX and grass seed at the same time with no ill effects. GrubEX is a pure insecticide and its active ingredient has no known effects on plant life.

Which is better GrubEX or Bayer?

Both are excellent products and very effective at killing a wide range of common grubs that may be living on your soil. Scotts GrubEx is a contact and prevention insecticide, while the Bayer Grub Killer Plus eliminates Grubs on contact within 24 hours. And they are sold in ready-to-use granular bags.

Is liquid or granular grub control better?

The best grub killer acts slowly, but an active infestation requires fast action before damaging the lawn. Liquids deliver quick results, but granules may be more convenient because they are easy to spread. Continue reading to learn some important factors to consider before making a selection.

What are the signs of grubs in your lawn?

When your yard is under attack by grubs, grass will thin and turn brown. This leads to visible larger brown patch areas in your yard. It's common to notice these odd-shaped brown patches in late summer or early fall. During this period, grubs amp up their eating, and the damaged and dead grass becomes more visible.

Is GrubEx toxic to dogs?

Grubex is pet-safe, so you can feel confident when using it on your lawn. There are several other biological, chemical and cultural controls to kill grubs and prevent them from destroying lawns. One is GrubGone!, which contains the active ingredient Bt galleriae.

How often should you apply grub control?

In most cases though, you'll only need to apply grub control twice in a season – the first one being a grub killer when you see signs of infestation and the second one being a grub preventer around June and July to stop their cycle.

How do you know if grub killer is working?

0:321:46How to check your lawn if you think you have lawn grubs - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf you want to find out for certain there's a few little tricks that you can try. The first test youMoreIf you want to find out for certain there's a few little tricks that you can try. The first test you can try is to mix together a bucket of soapy water and pour it over the edge of the affected.

What is the best treatment for grubs?

Trichlorfon. Trichlorfon is an organophosphate that starts killing grubs within about 1-3 days. The chemical breaks down after about 7-10 days. Like carbaryl, trichlorfon is most effective when applied in the early spring or fall.

How long does Scotts GrubEX take to work?

GrubEX is a product with long-term benefits. However, it needs time to become effective and should be reapplied each year for best results. GrubEX, on average, takes 60 to 90 days to become fully effective.

Can you put GrubEX on a wet lawn?

Yes, you can apply GrubEX to a wet lawn. GrubEX is meant to get wet immediately after being broadcast. This step is critical in the application of GrubEX if it's going to be effective. However, applying GrubEX to a wet lawn does not mean you can skip the water application step.

How soon can I seed after using GrubEX?

Before you can seed, you should wait until the grubs pupate into beetles and fly out of the ground. That will be when soil temps get consistently around 70 degrees.

Should you water after grub control?

Current research also shows that watering with 0.5 inches of irrigation immediately after the application is essential to get effective results from these insecticides. Our research has indicated that carbaryl has been a little more effective on European chafer grubs than trichlorfon.

When to Apply Grubex – Amazing Facts

GrubEx kills weeds before they even have the chance to sprout up through the soil. Grubs are the larvae of various beetles, including June and Japanese.

Types of Grubs

The following are some of the most common types of grubs that Grubex kills:

Best Time Round the Year to Use GrubEx

Grubex is a natural and safe product that can apply in any season. The best time is when the soil temperature is above 5°C (41°F).

Cautions While Applying GurbEx

Windy Days: The manufacturer recommends not applying Grubex on windy days or when it rains or snows.

Final Words

Grubex is the best remedy for your lawn when it’s been attacked by grubs. It helps restore your lawn’s beauty, health, and productivity after waging war against grubs. You may succeed in killing these enemies by ruining your garden and plants. You only need to follow the instructions and apply at the right time of grub’s mating season.

When to apply grubex?

Because GrubEx targets the larval stage of many insects, the best time to apply it is when the beetles burrow into lawns to lay their eggs -- in spring to early summer. When the eggs hatch, GrubEx kills the emerging larvae so they cannot develop into mature insects.

How do you know if you have grubs in your yard?

Affected lawns have brown or yellowing areas with sparse patches and spongy areas that develop as the grass dies. Secondary grub damage occurs when animals, such as moles, raccoons and birds, dig holes in your yard as they seek grubs to eat.

Is grubex safe for pets?

GrubEx is not activated until it’s watered in, and as soon as the lawn dries, it is safe for your family and pets. If grubs have damaged your lawn so severely you must replace grass, you may seed, sod or sprig immediately before or after applying GrubEx.

How often should you apply grub control?

You’ll need to apply grub control as per the stage of infestation in your lawn. But how often should you apply grub control?

When is the best time to apply grub control?

So, what is the best time to apply grub control on your lawn? The best time to apply grub control is early spring (late March to late April). You can also apply a grub killer when you see signs of grub damage. Grubs turn into adult Japanese beetles from late spring to early summer, which is a good time to put down a grub preventer for ...

When is it too late to treat for grubs?

It is too late to treat for grubs in late summer (September) because white grubs will have turned into adult beetles that are hard to kill. Even spraying a grub killer on the lawn may not kill 60% of the beetles that are already feeding on the foliage and laying eggs in your lawn.

How long do grub killer insecticides last?

Most grub preventers last between 60 and 90 days in the soil, which means they can control grub worms from the time they hatch to the time they become larvae. However, different products may have varying half-lives so it is important to do the timing properly before putting them down for the most prolonged control of grubs.

What is grub control?

Grub control comes in two types – grub preventers and grub killers. Prevention is the best approach to maintaining a healthy lawn, but sometimes, there will already be signs of grub damage in your lawn.

What is a good grub preventer?

A good grub preventer contains chlorantraniliprole, a compound that acts on the larvae of the grubs as they hatch. To ensure you have a grub-free lawn, you need to make sure the timing is right for the application.

How deep do grubs live in the soil?

Grubs live about 2 inches into the soil and this is where you need the treatment to reach. The best practice is to put down grub control granules or dust and then water the lawn to ensure the treatment kills grubs that are cutting the roots of your grass. You can also time to apply the grub killer just before it rains, ...

Should I apply GrubEx before rain?

A very important tip is to water the grub control in within a few days. You can wait for a good rain heading your way, and apply the grub control before the rain. ... The chemical in some grub controls will break down in hot, dry weather. So if you leave the chemical on your lawn and not watered in, it won't be effective.

How long does it take for GrubEx to work?

When does GrubEx work? GrubEx begins working 60 to 90 days after being applied to the soil. Unlike Merit, which works almost immediately, it's important to distribute GrubEx from mid-April to early June.

Will grass grow back after grub damage?

If you have patches of dead grass that show up in the fall or spring, they are likely caused by grubs. Grub counts from six to 10 or more per square foot can damage and kill grass. ... It is best to repair your grub-damaged lawn in the fall or early spring to restore it to its green glory.

Which is better GrubEx or Bayer?

What is the Difference between Scotts GrubEx vs Bayer (BioAdvanced) Grub Killer Plus? Scotts GrubEx is both a contact and prevention insecticide while the Bayer Grub Killer Plus kills Grubs on contact in 24 hours. ... GrubEx controls a long list of beetles and Grub Killer Plus kills many ants and mole crickets.

What does grub damage look like in your yard?

Look For Lawn Grub Damage Grass with damaged roots will begin to thin, yellow, and die. Irregular patches of brown grass will appear in random places in your lawn. Grass will feel very spongy and will pull up very easily. Since the roots are damaged, the turf will often roll up like carpet.

Can you have grubs in the fall?

Once soil temperatures drop, Grubs dig in, heading 4-8 inches below ground, where they'll stay snug until spring. That means early fall –before temperatures tumble –is a key time to go after Grubs, and as a result you can help prevent some of the most common lawn problems before they start.

Can you put down grub killer and grass seed at the same time?

Can I put grub-killer and grass seed down at the same time? If not, which one should I do first? A: There's nothing in grub-killers or grub-preventers that'll hinder grass seed. So yes, you can do both at the same time.

When is the best time to apply GrubEx?

The best time to apply GrubEx is during spring to early summer (May or June) when the beetles lay eggs on your turf. GrubEx works as a preventive measure by killing grubs as they hatch. As such, it will kill grubs before they are big enough to damage your lawn.

How to take care of lawn after using GrubEx?

After successfully treating your lawn, apply the following lawn care tips to prevent it from becoming vulnerable to future grub infestation:

When is it too late to treat grubs?

It is too late to treat for grubs using GrubEx during late summer and early spring because the grubs will be mature or at an advanced larval stage. GrubEx does not kill mature grubs but works to eliminate the beetle’s eggs as they hatch.

Can I apply GrubEx to a wet lawn?

According to the Scotts GrubEx label, you can apply GrubEx to a wet lawn but for optimum effectiveness, apply the pesticide when the lawn is dry then water it into the soil. Grub Ex will wash down into your soil and disrupt the life cycle of the grubs before they hatch and mature.

How long does it take for grubs to kill?

While the manufacturers' labels may indicate a speedy solution, curative treatments may take up to four weeks to take full effect on the grub population.

How to kill grubs in spring?

Preventative grub treatments should be applied either in spring to kill the overwintering grubs as they emerge from the soil, or in summer to kill the newly hatched grubs. Apply chlorantraniliprole products to the lawn in spring when the weather warms. Clothianidin, imidacloprid or thiamethoxam can be used in summer treatments to kill the new grubs as they emerge from their eggs and begin to feed.

What kills grubs in the fall?

Carbaryl and trichlorfon kill grubs at all stages of their life cycle. The pesticides may be applied in spring or fall. When applied in early fall, they generally kill between 20 and 80 percent of the grubs. If you wait until late fall to apply the pesticides, they only kill 20 to 55 percent of the grubs. While the manufacturers' labels may indicate a speedy solution, curative treatments may take up to four weeks to take full effect on the grub population.

How do grubs eat grass?

The grubs eat the roots of the grass, literally releasing the grass from the soil. Dead patches appear in spring when the grubs move back up to the grass and begin feeding. More patches appear in late summer and fall when the eggs hatch and new grubs begin their life cycle. Dig around the edges of the dead patches, and roll the turf away from the soil. The C-shaped grubs lie in the soil, under the dead grass. Depending on the species, these grayish-white grubs may be more than 1 inch long.

What are grubs in beetles?

Grubs are the larvae of several different beetle species. Chafer beetles (Cyclocephala spp.), Japanese beetles (Popillia japonica) and May and June beetles (Phyllophaga spp.) are among the species that are considered grubs in their larval stages. The grubs are highly destructive to lawns.

How to protect honeybees from pesticides?

Mow the grass to remove flowering weeds and protect honeybees from the pesticides. Apply pesticide on a calm day when the forecast predicts clear weather for at least 24 hours. Put on a dust mask, safety goggles, rubber gloves, rubber boots, long pants and long sleeves before handling the pesticide.

When do grubs lay eggs?

The majority of adult beetle species lay eggs in the summer. The grubs hatch and eat the grass roots until cold weather arrives. Then grubs burrow 2 to 8 inches into the soil to overwinter. When spring arrives and the soil warms, the grubs begin feeding on the grass roots again.

How long does it take to get rid of grubs?

It may take a few seasons to get the job done. Applying grub control year after year is an unnecessary waste of time, money, and energy if you no longer see damage from grub worms.

When is the best time to put down grubs in Illinois?

For example, if you are wondering when is the best time to put down grub control in Illinois, the answer is somewhere between mid-June and early August.

How to kill grubs in soil?

At their most destructive, grubs are sitting just below the surface of the soil, happily munching on grassroots. This is why the number one most important thing to remember when applying a grub killer, whether preventative or not, is to water the solution in. This ensures the insecticide soaks into the soil instead of just sitting on top. In order to maintain the most control of the environment when applying: 1 Dethatch (or rake away the dead grass) the affected area 2 Apply the grub control on relatively dry soil 3 Remember this is a chemical solution – always wear rubber gloves and follow the label 4 Some rain in the forecast is okay, but a heavy rainfall may wash the solution away 5 Water half and inch to an inch deep after applying

How long does it take for grubs to hatch?

Application of a preventative insecticide needs to happen close to when the eggs are hatching, which is within 10 days of the eggs being laid.

Why is it important to water grub killer?

This is why the number one most important thing to remember when applying a grub killer, whether preventative or not, is to water the solution in. This ensures the insecticide soaks into the soil instead of just sitting on top. In order to maintain the most control of the environment when applying:

What to do if grubs don't die off?

If the grubs don’t appear to have died off, then you may need to reapply. Make sure always to read and follow the label, but it may be the case that you need a stronger dosage.

Do you need to water a lawn after grub control?

Once the grub control is applied, it is essential to care properly for your lawn afterward and ensure the solution gets where it needs to be. Because grubs thrive among the roots of the grass in the soil, the grub killer needs to be watered in.

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