For use Indoors. Place in cabinets, under sinks, behind appliances and at point of infestation. For effective control, replace every 3 months. Grant’s Kills Ants was one of the first ant bait products used to control invading ants. Using a unique bait stake, the bait is contained in the stake and the product is effective in killing ants while protecting the environment. Today, Grant’s continues to provide superior ant killing bait products and insect killers to protect your home.