Combat Roach Killing Bait, Large Roach Bait Station, 8 Count (780059/41913) Get rid of cockroach problems at the source with this specially designed large roach bait product 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 and destroys the nest. Eight child-resistant bait stations are included.