Surface sprays Plywood surfaces are treated with each product for this test. Five German cockroaches are placed in a plastic container that’s then placed on a treated surface, so cockroaches were exposed it. We note knockdown after one and four hours of exposure, and knockdown and mortality after 24 and 48 hours of exposure. This test is also carried out for American cockroaches and repeated four times for each product.
Baits/traps The gels, baits and sticky traps are removed from their packaging and aged for two, four and eight weeks. In each tray, 20 German and 20 American cockroaches are placed (German and American cockroaches are evaluated in separate containers) and left for one day to acclimatise (any dead cockroaches were replaced). Each tray also has an alternative food source, water dispenser, and harborage. The gel, bait, and sticky trap are introduced to the trays and left for seven days. The numbers of dead cockroaches is noted at one, three and seven days, and the test is repeated four times for each product.
Knockdown sprays We assess how fast (in seconds) the spray works to "knock down" cockroaches. Independent external testers place 10 German and 10 American cockroaches in specifically designed chambers. German cockroaches receive a 0.5 second burst of the aerosol, while American cockroaches receive a two-second spray, both from a distance of 45cm, and the response time and number of cockroaches knocked down is noted. Each test is repeated five times for each product.
Each test includes controls.