SCREW-WORMS AXD OTHER MAGGO IS. 



17 



is clear that practically all of the methods of control recommended 

 for the screw-worm are equally applicable to the other species of 

 noxious flies. To prevent the breeding of the black blowfly it is 

 essential that carcasses be burned or buried, even during the winter 

 months. Thus the proper disposal of carcasses becomes of much 

 importance all the year. Where thest flies become a nuisance by con- 

 taminating food products or by entering houses, which is usual in 

 towns or cities, attention must be given to the proper disposal of 

 garbage, as they will breed in the meat scraps in garbage cans or 

 on dumps as well as in carcasses. 



THE TREATMENT OF MAGGOTS IN WOUNDS. 



To destroy maggots in sores the same method as for the screw- 

 w^orm is to be followed. It is not always possible to prevent maggot 

 infestation following dehorning, but if periods of cool weather in 

 winter are chosen for this operation, usually no trouble follows. 

 To prevent rnaggots from gaining entrance to wounds the ap- 

 plication of pine tar is advised. Following dehorning, some ad- 

 ^ise covering the wounds with pieces of cloth dipped in pine tar. 

 Many of these will remain in place several da}' s. 



The tails of lambs are sometimes infested by maggots follow- 

 ing docking. This can be largely 

 prevented by removing the tails 

 with moderately heated pincers. 

 The docking of lambs also tends 

 to avoid soiling of the wool dur- 

 ing succeeding months, and this 

 helps to prevent infestation of 

 the rump by maggots. Other 

 important steps in preventing 

 wool-maggot injury are the fol- 

 lowing: (1) Breed hornless 

 sheep and thus avoid injury 

 from horns and consequent in- 

 festation around them; (2) 

 lamb as early in the spring as 

 possible — considering other con- 

 ditions; (3) shear either before 

 lambing or as soon after as pos- 

 sible, and thus avoid the infesta- 

 tions which almost invariably 

 follow in heavy-wool sheep when ^^^ g_^ ^^.^^ g^^,^ g^ (sarcophaoa sp.) 

 warm, humid weather comes on. Enlarged* 



