Ants On Lawn Problem.
Nemasys No Ants – Environmentally friendly and safe for children,pets, wildlife and bees.
Use Nemasys No Ants to deal with an ant infestation,without any of the precautions associated with chemical use.
Apply when ant activity is visible on top of the lawn,this is typically April through to September.
Apply to moist lawns when the soil temperature is above 10ºC (50ºF) and water them in well.Make sure the lawn does not dry out for at least two weeks after applying nematodes.
The ants do not tolerate the nematodes(Steinernema feltiae)near their nests and move their nests away from these areas.
http://www.nickys-nursery.co.uk/seeds/pages/nematode.htm