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Livestock Insects 



Its time to begin your barn fly control program before flies become too numerous. 

 The following suggestions will provide the best results: 



1. Practice good sanitation. Eliminate fly breeding sites- -such as manure, rot- 

 ting, straw, wet hay, and feed- -as often as possible, preferably once per week. 

 Spreading this refuse where it can dry makes it unsatisfactory for fly develop- 

 ment. 



2. Apply a barn spray to the runoff on ceilings and walls in all livestock build- 

 ings. Also spot-spray outside around doors and windows and along fences in the 

 lot. The following insecticides are suggested for this purpose: 



Insecticide Amount per 100 gallons of water Length of control 



dimethoate, 25 percent (Cygon) 4 gallons 4-6 weeks 



diazinon, 48 percent 2 gallons 2-4 weeks 



diazinon, 50 percent 16 gallons 2-4 weeks 



ronnel, 24 percent (korlan) 4 gallons. 1-3 weeks 



ronnel, 25 percent 52 pounds 1-3 weeks 



Use only ronnel in poultry houses. All materials are cleared for use in dairy, 

 beef, swine, sheep, and horse barns. Always cover all feed and water troughs 

 before spraying. Do not spray animals. Remove animals before spraying the 

 barn. 



3. You may also want to supplement good sanitation and barn spraying by using a 

 bait material. Spray baits are preferred since they stick on vertical sur- 

 faces and can be applied more extensively to the favorite fly-roosting areas. 

 Use diazinon, ronnel, dichloi~vos (DDVP), naled (Dibrom) , or trichlorfon (Dylox) 

 in a mixture of 2 parts clear corn sirup and 1 part water. Usually, 1 to 2 

 ounces of the insecticide in 4 pints of sirup and 2 pints of water is sufficient. 



Barn foggers using insecticides like dichlorvos (DDVP) pyrethrum, and others, 

 provide quick kill of flies during the fogging operation (15 to 20 minutes), 

 but the effect is not lasting. When fly populations become intense (fair to 

 poor sanitation conditions), even twice-a-day fogging fails to provide satis- 

 factory fly control for the farm- -even though the barn is kept temporarily free 

 of flies. As normally used, foggers do not leave enough of an insecticide de- 

 posit on animals to protect them from flies in pasture. Coarse sprays are 

 best for this purpose. 



Homeowner Insect Problems 



Sod webworm moths are emerging from larvae that survived the winter. They are now 

 laying the eggs that will produce the f irst- gene rat ion worms . These worms are seldom 

 numerous enough in lawns to cause injury. However, if moths are extremely thick in 

 your yard, watch for signs of damage in 2 to 4 weeks. If treatment is needed, apply 

 carbaryl (Sevin) or diazinon. Usually, it is the second- generation worms (present 

 in late July and August) that build up and cause the damage. It is too soon to pre- 

 dict sod webworm problems for 1967. 



