22 



increased the house fly catch 1.8- to A. 6-fold. Driggers (1971) caught 

 10.24 times as many house flies with traps at ground level than with 

 traps 1.5 m above the ground. Prime trapping time for house flies at a 

 north Florida poultry farm was from 5 min before sunset to 5 min after 

 sunset (Driggers, 1971)- Driggers (1971) reduced house flies at the 

 farm by 52.8 and 73.1% in 1 and k weeks respectively, by using four 

 light traps placed at ground level in a 121.9 m poultry house. Thimijan 

 et al. (1972) estimated that 52 light traps would be needed in a 

 screened dairy barn to capture 0.5% of the 2500 to 5000 flies that were 

 being released in the barn daily during the test period. 



Catches of flies by light traps have been found to be highly 

 variable. As a result, light traps are recommended for survey work, but 

 they are not considered consistent enough to accurately estimate fly 

 populations (Pickens et al., 1972). A more complete summary of light 

 trap evaluations has been prepared by Hienton (197*0- 

 Bai ts 



An early account of killing flies by attracting them witn baits 

 was published by Morrill (191**) • He gives a full account of all items 

 tested and their efficacy. The best combination was overripe banana 

 on sticky fly paper. 



Most baits used today are granulated sugar baits with or without 

 attractants. Baits in other forms have been tested with some success. 

 Mayeux (195**a) made a ]% solution of malathion in honey. Burlap was 

 painted with this solution and hung in poultry houses to kill flies. 

 Good control was attained and the bait was active for 1 to 2h days. 



