160 SANITARY ENTOMOLOGY 



ing with fly larvae, or to find piles of manure standing for weeks in front 

 of livery stables, even on the sidewalks. 



In one small city, the writer, in passing by a side track where certain 

 grain companies unloaded straw and feed, using horse drawn wagons, 

 noticed that the ground along these tracks was a thick mixture of 

 rotting straw, grain, and horse droppings. This was across the street 

 from the city market where flies were swarming in the fish stalls especially. 

 Only a personal tour of inspection by a trained observer would turn 

 up many of the most important sources of fly breeding. 



Garbage 



Needless to say it is necessary that garbage be kept in fly-tight cans 

 and that it be removed daily, or every third day when the amount is 

 small. The army method of building a screened box for holding the 



Fig. 34. — Top of garbage can with small balloon fly-trap attached. (Bishopp.) 



garbage cans is very good, and would be an excellent plan for hotels and 

 restaurants especially. A fly trap on a garbage can will catch many 

 flies (fig. 34). Empty garbage cans are very attractive to flies. The 

 writer has seen many wagons full of empty cans wliich had been washed 

 in lye water, swarming with flies, returning to camp. It is necessary to 

 wash the cans in a creosote compound. Householders are A^ery careless 

 of the cleanliness of their garbage cans. If they can not wash them they 

 can rinse them with a hose and treat with a creosote compound or h'e 

 water. When garbage is farmed out for feeding to pigs the farmers 

 should be bound by contract not to take more than their pigs can consume 

 in a day. The feeding pen should have a cement foundation so that it 

 can easily be cleaned. The remains of the day's feeding should be burned. 

 Many municipalities, as well as army camps, dispose of the garbage by 

 incineration. Others sell to contractors for reclamation. Some parts of 

 the garbage are not of value for feeding or reclamation and the writer 

 has seen instances where such material was throAvai on dumps with tin 

 cans and trash and not burned. Great vigilance is necessary at all waste 



