Using Nematodes to repel Ants
Nematodes do not actually kill ants, but they have a deterrent effect, in that ants will choose to move away if you drench the ground with certain nematodes. This new product called "No Ants!" is a sealed pack of nematodes. Just mix with water and sprinkle onto the offending nests. Like all our nematode packs it should be ordered fresh, and not stored after it is open. If you have to keep it a few days before using it then just pop it in the fridge.
The best time to apply is in spring when the soil is warm and wet.