Insecticide for cockroach gel in a syringe. Exterminates cockroaches in the nest. It is practical and very effective in eliminating the problem of cockroaches. The exclusive design of the syringe allows accurate and easy access to the most affected areas, where no other insecticides reach. It kills the entire cockroach colony, as cockroaches are not killed immediately, but carry the active ingredient to the nest, multiplying the killing power throughout the nest.