[Possibilities for controlling cockroaches in their hiding places].

Possibilities for cockroach control in cracks and crevices. A simple pinnozzle is described which allows crack and crevice treatment. The construction of the needle attachment allows its employment in usual application equipments. This method requires higher qualification of the pest control operator and more time for application. There are less residues on surfaces in food areas and utenils. A hand duster is suitable for dust application.