Because bots may reach the 

 digestive tract of horses throughout 

 the fly season, and for several 

 months afterward, the best control 

 of bots by drugs is by giving treat- 

 ments at intervals during the fly 

 season and at least once during the 

 following winter. 



COMMUNITY CONTROL 

 PROGRAMS 



A number of communities have 

 attempted bot control by a system- 

 atic treatment of all donkeys, mules, 

 horses, and colts. In only 1 year, 

 such treatment has greatly de- 

 creased the annoyance from bot 

 flies and has improved the health of 

 the animals. 



It appears possible to achieve a 

 high degree of control of bot flies 

 by 2 or 3 years of systematic com- 

 munity effort. 



To arrange for a community con- 

 trol program, consult your county 

 agent, farm advisor, or veterinarian. 



PRECAUTION 



Insecticides and drugs used im- 

 properly can be injurious to man, 

 animals, and plants. Follow the di- 

 rections and heed all precautions on 

 the labels. 



In general, drugs should be ad- 

 ministered to horses under veteri- 

 nary supervision. However, if pro- 

 prietary products are used, the 

 manufacturer's directions on the 

 labels should be followed carefully. 



Prepared by 



Northeastern Region 

 Agricultural Research Service 



Washington, D.C. 



Revised April 1973 



Slightly revised February 1976 



For sale by the Superintendent of Documents, 

 U.S. Government Printing Office, Washington, D.C. 20402 



U.S. GOVERNMENT PRINTING OFFICE: 1976— 02 13-043 



