Insect proofing of buildings
- Fly screens made of stainless steel or nylon should be fitted on external doors and opening windows and will eliminate easy access of insects.
- Insecticides should be sprayed on fly screens from the inside outwards.
- External doors should be kept closed where possible and self-closing double doors used in the receiving area.
- Cracks in floors and walls should be properly repaired.
Insecticides
Cockroaches lay eggs in capsules out of reach of insecticides, so a carefully planned programme of treatments is needed if they infest a premise. Cockroaches are very difficult to remove if they infest a food premises.
Pyrethroid sprays and impregnated plastic strips are useful around refuge areas. They should not be used near food. Insecticide lacquers are also available which can be applied to walls.
Insecticides should not be used as substitute for cleaning.
