Advion®Cockroach Gel bait, when applied in the field, attracts German cockroaches even in the day. In this video, cockroaches start to feed not long after application. It’s better to apply a larger number of small gel spots rather than a small number of large gel spots, and is more successful when you bring the bait to the cockroach infestation area. Cockroaches also don’t mark the bait points like ants do.