5. Application of methods so as to make as selective as possible 
for the animal pest concerned and distribute in accordance with 
the feeding habits of the animal. 
6. Any method ineffective unless employed on an extensive scale 
covering completely large infested areas during one season. 
7. Individual ranchers or farmers efforts unsuccessful. Trained 
crew operations are both more efficient and less expensive. 
8. After rodents are once brought under economic control, it is 
cheaper to employ a small trained crew to inspect and apply con- 
trol methods as required each season than to stop control 
practices and let the populations build up again. 
9. In the control of the coyote employ control methods that are 
effective at the right time of year at the right place to re- 
move them from the locality where they can be destructive to 
domestic stock or game animals and birds at certain periods of 
the year. That is, have them removed before the destruction 
starts rather than wait until it does and then attempt it because 
so often the area involved is too large to remove the coyotes 
rapidly enough with the control methods now in use.  This can 
be done if it is a small local case and only one to four or 
five coyotes involved. A new device is now being tested which 
may aid in removing coyotes at the time they are doing the damage. 
Alternatives to Rodent Poisoning 
I. Those which have never been tried by public conservation agencies. 
A. Managing raptores and carnivores by environmental controls. 
1. Planting owl converts. 
Owls feed on those rodents that feed at night, such as, mice, 
 
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