Sticky traps can help locate cockroach breeding sites and identify places in a structure where cockroaches are getting in from outside.

Sticky trap covered with an assortment of cockroaches; Riverside County, CA Credit: Dong-Hwan Choe, UC Riverside
Sticky traps can help locate cockroach breeding sites and identify places in a structure where cockroaches are getting in from outside. Credit: Dong-Hwan Choe, UC Riverside