-2- 



properly, but must be applied daily to a strip about six inches long and an inch 

 wide on the animals' foreheads. After the population has been brought under con- 

 trol, maintenance applications every three to five days will be needed. 



For non-dairy cattle that cannot be handled, 5 percent toxaphene in back- 

 rubbers have been giving some relief. The effectiveness of this method depends 

 entirely on how much the cattle use the backrubber. Where the problem of use 

 exists, study the situation carefully to determine what type of backrubber to use 

 and where to locate it. Even when properly located, backrubbers must be recharged 

 about once a week for best results. When using toxsphene, do not slaughter animals 

 for 28 days after treatment. 



Caution : Before applying insecticides, read labels carefully and follow 

 all precautions. This not only will insure personal safety, but will also elimi- 

 nate insecticide residue hazards. 



****** 



This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension 

 Service and Illinois Natural History Survey, in cooperation with the USDA Agri- 

 cultural Service, Plant Pest Control Branch, from information gathered by ento- 

 mologists and cooperators who send in weekly reports from their own localities. 



