20 HOW TO GET THE LAST TICK, 



should be insisted upon until sufficient time has 

 elapsed since ticks were last found to insure eradica- 

 tion. " When in dovht dip" is a good rule to follow 

 in final work. 



In "open" or "free" range counties the matter of 

 release from quarantine whUe infestation remains in 

 the county requires careful consideration of local con- 

 ditions, and unless the infested area is small and 

 separated from the tick-free area by a natural barrier, 

 such as a river^ the county should not be released 

 from quarantine until tick eradication is completed. 

 Under open-range conditions, where one careless 

 owner by neglecting to disinfect properly one cow 

 may expose a range used by 100 other herds and 

 thereby place all herds in the same status as his, tick 

 eradication more than ever is a community problem 

 which will be disposed of only when the community 

 as a whole completes tick eradication. 



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