I tried them, they help. I decided I couldn't aford them. My cows consumed them like candy. If the neighbors don't use them, we still had fly problems. As for the expense, I must remember fly rubs and sprays, and pour-ons collectively cost money also. So the question, are the blocks really too expensive to use?
> What are your thoughts on using
> these fly blocks. Will they really
> work?
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