This is an odorless, colorless insecticide. I noticed ants coming into my apartment in my bathroom and at the entrance. I discovered they were coming out of a hole at the base of my toilet, so I gave it a spray there and around my entrance, and all I have seen are dead ants by that hole and no live ones anywhere. I use the spray around any place bugs can come in, around the base boards, window sills, etc. I get no spiders or anything surviving. Bug free!
Do not use on food preparation surfaces. Keep pets and children away from it for one hour to allow it to dry. Highly toxic to aquatic life, so don't use near an aquarium. Can be found at Wal*Mart and Canadian Tire. The company name is Ortho that makes it.