Combat Roach Killing Bait is specially designed for large roaches, waterbugs, and palmetto bugs. Kill the nest, getting rid of cockroach problems at the source with this specially designed large roach bait product long-lasting formula with the powerful insecticide, containing Hydramethylnon. Easy-to-use, no-mess baits do not require activation. Simply place them wherever you see or have seen roaches and relax while they kill non-stop day and night. Best used in areas like under sinks, behind toilets, and behind appliances, killing the ones you see and the ones you don't roaches kills roaches and destroys the nest. Contains eight child-resistant bait stations.