Cockroaches like to stay in warm, humid crevices with food debris.
Therefore, if cockroach killing drugs are to be arranged, there are two principles and three classifications.
Two principles:
The range of arrangement is wide, and it should be arranged on the route of cockroach activities.
Three categories:
Green dots represent dots where [glue bait] should be arranged;
Red dots represent dots where [poison bait] should be arranged;
Purple strips represent where [cockroach sticking paper] should be placed.