Insect Solutions Robocan Unit Complete Johnson Raid Robocan Unit automatically dispenses a microdose of insecticide every 5 to 7 minutes, depending on the setting, 24 hours a day providing an airborne barrier which kills and repels flying and crawling insects. AQIS approved for food-based establishments and virtually undetectable. Each can will last up to 50 days. The complete unit includes a wall mounted dispenser and one can of Raid.