A roach gel is a concentrated poison that is thick enough to stay put just where it is needed. It is an effective roach killing method, but some users do report that it can stain floors and other surfaces where it's used. Roach gel is especially useful if your roach problem is within the walls or in very tight spaces where a roach bait won't fit. The gel can be squeezed from a narrow tip that allows the gel to be placed with precision in areas where it is needed.
Using roach gel is similar to using poison sprays but it doesn't leave behind any fumes. It is, however, dangerous to children and pets who may walk through it, tough it or drop food on it. For that reason it should be placed in places that are out of the way of foot traffic. But, because roaches like dark, narrow places, it can be effective when used under sinks, behind appliances and furniture and in unused areas in the garage, attic and basement.
A roach gel might be right for your roach problem if:
Roach gel may not be the best roach killing option if: