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summer fly control. In the early spring, observation would indicate that a fairly high percentage of beef cattle producers are using one of the fly tags impregnated with synthetic pyrethroids this year. It appears from testing that we have done that fly tags are extremely beneficial in controlling both horn and face flies. Many question^ have been asked relative ttf how many fly tags should put on cows and calves, and whether one tag should be put on the cow and one of the calf or two tags on the cow.
Experience to date indicates that the company recommendations of a tag in each ear on the cow and no tags on the suckling calves probably do the best job. On yearling stocker cattle, where face flies are a problem, a tag in each ear should be used. There are several other methods of fly control which, indeed, work quite well, including backrubbers, various devices that attach to salt and mineral feeders, and, of course, dust bags and sprays.
This year for the first time, synthetic pyrethroids such as Fenvalorate are cleared for use in backrubbers and face mops, which you may want to check on. In any event, if you have done nothing to control flies, you still have time to get the job done by beginning some kind of treatment or eartagging now.
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