If you kill off the grubs by using a different product before they have a chance to consume the Milky Spore Lawn Spreader Mix, the product will not be able to multiply in the gut of the grub and spread through your lawn. If you used a grub killer, then you would be limiting the effects of using milky spore.
If the ground is wet, this will help to carry the milky spore into the soil. It is ok to apply the Milky Spore Granules now that the grass is wet. You want to apply 3 times a year for 2 years. One app memorial day one app 4th of July and last app by Labor day. Once you have done this 2 years in a row, you should be rid of grubs.
Per the manufacturer, the white granules you are seeing are just the clay carrier used to distribute the Milky Spore on the ground. The spores are not wrapped in the clay carrier, just mixed in with it, so the spores are still being distributed on the lawn and will control the grubs. Sometimes the type of clay carrier they use for a particular batch may not break down with watering but this should not affect the actual spores in any way as long as the application instructions on the product label were followed.
Milky Spore Lawn Spreader Mix will only kill white grub larvae and will not harm earthworms.
The manufacturer of Milky Spore Lawn Spreader Mix strongly suggests applying this product with a drop spreader. It must be placed in concentrated areas on the lawn and a drop spreader will cover every square foot of grass. If you use a rotary spreader you need to go very slowly. If you go too fast, the granules may cloud up and the spores will blow away and not penetrate the soil. We are not sure what the setting would be for that particular Scotts spreader. We would suggest contacting Scotts at 1-888-270-3714.
The Milky Spore Lawn Spreader Mix is recommended for treating the larvae of Japanese beetles, grubs. Talstar P will help control adult Japanese beetles if you need spray plants and such.
According to the manufacturer, the Milky Spore Lawn Spreader Mix is to be watered in 24-48 hours after application. Any weed and feed product can be applied right after.
Per the manufacturer, Milky Spore Lawn Spreader Mix can be applied with a rotary spreader, but you need to go very slowly. If you go too fast, the granules may cloud up and the spores will blow away and not penetrate the soil.
Milky spore is a common grub treatment, but it will only affect Japanese beetle white grubs. This is why it is important to identify the grub before deciding to treat. Milky spore comes in two formulations, granules and powder. The granules must be applied multiple times over two years using a spreader. The powder only has to be applied one time using a specially designed applicator. It does take about 2 years to see the initial results but the spore keeps working to control grubs for at least 10 years. Here is our white grub guide for more information.
Milky Spore Lawn Spreader Mix is not a chemical pesticide and it is harmless to food crops. There is no time interval between using the product and planting.
Milky Spore has an indefinite shelf life and will not go bad in the bag.
According to the manufacturer, the Milky Spore Lawn Spreader Mix is to be watered in 24-48 hours after application. Any weed and feed product can be applied right after.
Milky Spore should be applied three times a year for two consecutive years in a row. The best time should be in the spring (May), summer (July) and fall (September). It would be too late in the year to apply this product now. We would recommend waiting until the Spring to apply.
The Milky Spore only affects Japanese Beetle Grubs. A better option for you would be to treat in the beginning of May and in June with a product like Merit to control the grubs during the most activity of them in the soil to get the best results. Fall treatments even in warm climates like Florida will not see full control, typically, as they are feeding less on the lawn and will not consume as much of the Merit to be affected by it. The other option if you want something for what activity you are experiencing now, the only product that will really work to drop the grub population is Dylox. It only lasts in the soil about 24-48 hours but its designed to knock back the numbers in large amounts in that time frame.
