 it's okay to put the beneficial nematodes out, even if it's in the heat of the summer like right now. You just need to have the soil moist before you put them out, and then after they're applied, water real well. You know, letting them dry up and burn up is about the only thing you can do wrong with the beneficial nematodes. The other thing is the same insecticide, the organic insect control product I mentioned before,