Target Pests = Cockroaches, ants, crickets Highly attractive, slow-drying insecticidal bait. Controls cockroaches, ants and crickets. Can be used in conjunction with Gentrol Insect Growth Regulator. Can be used for indoor and outdoor applications and refillable bait stations. Ready to use. Packaged in an easy to use plastic syringe. How It Works MATRIX Roach and Ant Bait is a slow-drying insecticidal bait. Hydramethylnon, the active ingredient, with a combination of proteins and sugars effectively controls cockroaches, ants and crickets. Use as a spot or crack and crevice treatment for indoor and outdoor control in residential and non-residential areas such as homes, apartment buildings, commercial buildings and sites. Matrix can also be used in refillable bait stations. The ready to use plastic syringe allows for fast and accurate application.