…nd doors of food premises. Electronic fly killers (EFKs) and sticky fly papers can also be used where the infestation level is not large. Knock-down space sprays or non-residual pyrethroid mixtures can have spectacular short-term results against fly infestations. Where knock-down pyrethroids are used and label instructions permit, higher concentration products are usually more effective. For mo re advice on getting rid of common house flies…