Cirkil RTU is a ready-to-use botanical insecticide that is made with cold-pressed neem oil from the neem tree. This biodegradable insecticide kills adult bed bugs, bed bug nymphs and bed bug eggs for up to two weeks. It works quickly and has a broad and flexible indoor use label. Cirkil RTU kills bed bugs within eight hours of application and works well against pyrethroid-resistant strains of bed bugs. Cirkil-RTU 32 oz Kills all stages of Bed Bugs.