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The major problem with treating horses for worms today is resistance to chemical wormers.

Unfortunately, we have over-used our wormers. Treating every 4-8 weeks has resulted in some worms
developing resistance to the worming products we use on our horses.

We can still worm our horses, but we need to ‘worm smarter, not harder’.

The best way to create a parasite control program is to perform FECs at least annually and treat based
on the results. However if this is impossible, twice yearly treatments with Equest® Plus Tape is the strategic way to ensure horse health and protect against resistance development.

Read Zoetis’ full guide to modern worming below.