EN
The effect of three aryl and heteroaryl dichlorobenzoylurea compounds as insect chitin inhibitors on sanitary important insects were investigated. These compounds were given insects: larvae and adults flies (Musca domestica) and cockroaches (Blattella germanica) with food. The best results on flies were after exposition to AG -6 and on cockroaches to AG- 5. AG -6 complete inhibited metamorphosis after exposition of larvae and after exposition of adults in generation F 1. No mature cockroaches from larvae exposed to AG-5, no hatching from cocoons lied by treated adults were observed.