The Nippon Ant Killer System is a clean, simple and convenient method of dealing with ant infestations in and around the home. It contains two refillable ant traps and a supply of Nippon Ant Killer liquid, for quick elimination of ants and their nests without trace. The Nippon Ant Killer Liquid acts as a lethal bait for ants. Setting the traps is easy - simply pierce four holes in the sides of each trap, place a few drops of the liquid in the centre of the traps and replace the lid. The system should be used at the first sign of ant activity - normally in early spring. Suitable for indoor and outdoor use. Use at the first signs of ant activity (normally early spring). Contains Spinosad.