CHAPTER XI 



Control of Flies in Bam Yards, Pig Pens and Chicken Yards ^ 



F. C. Bishopp 



The question of the control of flies in their various breeding media or 

 places of breeding can not be well divided in the discussion. Attention 

 has been given in a previous lecture (Chapter X) to the general aspects 

 of house fly control and the most favorable breeding media and methods 

 of handling them have been discussed in a general way. Therefore I shall 

 take up the special problems under the three situations listed in the 

 title. Adequate care of the manure and other refuse in these situations 

 will not only result in the prevention of breeding of house flies in them 

 but will also reduce the number of certain other flies which play a part in 

 disease dissemination among man and animals, notably the horn fly, stable 

 fly, Muscina, spp., Fannia spp., certain Sarcophagids and lesser numbers 

 of Muscidae known as blow flies, which occasionally breed in hog manure 

 and freely in unconsumed animal matter in garbage. 



KEPRESSION OF FLIES IN BARN YARD 



The discussion of this problem is bound up closely with that of the 

 control of the house fly through the care of horse manure, etc. If 

 manure is promptly disposed, of as removed from the bam the yards are 

 kept in better condition and the scattered droppings either of horses or 

 cattle are less dangerous as regards fly breeding. In drier regions of the 

 country these droppings may be practically neglected. Where large 

 numbers of horses are kept in sheds or yards, the entire area requires 

 treatment. The manure should be scraped up at least as frequently as 

 three-day intervals and scattered thinly on fields or composted and 

 treated with borax or other larvicides. 



In large stock concentrating points where stockyards and mule sales 

 stables are of great extent the problem of disposing of the manure from 

 the yards is a difficult one. In the Eastern States it has been the usual 

 practice to contract the manure to certain companies or to permit farmers 

 and truckers to enter the yards and get manure when they desire it. One 



^This lecture was read September 9 aoad distributed September 11, 1918, and is now- 

 reproduced practically in its original form. 



167 



