Apply the powder anytime during the year, as long as the soil is at least 65 °F (18 °C). To check the temperature of the soil, stick a metal thermometer roughly 3 inches (7. 6 cm) deep into the soil. If the soil is below 65 °F (18 °C), the grubs won’t be feeding and the powder won’t be ingested. The soil doesn’t need to be damp or wet for you to apply the Milky Spore.
A 10 oz (280 g) container treats 2,500 square feet (760 sq m), while a 40 oz (1,100 g) box treats 10,000 square feet (3,000 sq m). This dispenser is designed so that when you tap it on the ground, it dispenses the powder.
A 1 pound (0. 45 kg) coffee can works best. Fill the can just as you would the lawn and garden dispenser. The nail holes should be big enough for the Milky Spore to pass through, but they don’t need to be huge—a medium-sized nail should work.
Dispense about 1 teaspoon (4. 9 ml) teaspoon of powder every 4 feet (1. 2 m). Don’t worry about the areas that went untreated in the grid — the spores will spread naturally throughout the entire area.
If you’re watering the ground yourself, use a spray hose with a softer spray setting— you don’t want to spray the ground so intensely that the powder washes away. If you’re applying it before rain, make sure the rain is going to be light as opposed to a heavy storm that will wash the Milky Spore away.
Once it has been treated, the Milky Spore should work for at least 10 years without another treatment. Since it takes several years for the grubs to completely die, be patient and know that the Milky Spore is working slowly.
This often happens in the late summer.
The grubs range in size, but average about 1 inch (2. 5 cm) in length.
