Equine Pinworms: Ick.

Pinworms enter your horse via contaminated water, grain, hay or grass. Young worms mature in the large intestine in three to four months. Adult worms crawl part way out of the anus to deposit their eggs on the adjacent surface. The eggs hatch outside of the horse's body, fall to the ground and wait for their next host.

Female pinworms make their egg-laying journey under cover of night, so you may not see any worms when you horse's anal area. To test your horse for pinworms, your veterinarian will use a clear tape to determine if pinworm eggs are present.

Most dewormers will end the pinworm problem very effectively. Learn a handy technique to help you administer horse dewormer here.

Tip: Use paper towels or disposable "wipes" for cleansing the dock area. Sponges can harbour eggs and the infection.

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