Roach Killing Gel: Roaches eat gel and take it back to the nest. Roaches share the gel, killing other roaches destroying the nest. Roaches share the gel, killing other roaches destroying the nest. Roaches enter bait station and eat the bait. Roaches take the bait to the nest. Roaches share the bait, killing other roaches and destroying the nest. Results may be affected by the number of roaches, the cleanliness of the area, and the use of other roaches control measures throughout the structure.