IMO, this decision depends on your climate. I live where we have hard freezing weather for short periods in the winter and extremely dry summers (high desert nortern NV) . Just the other day I noticed our humidity outdoors is still only 5%. It's difficult for parasites to live where there are temperature extremes and it is dry.
That being said, I also have a daughter who works for a vet and can take in a fecal sample anytime something is suspicious (rarely, maybe twice per year including 3 dogs, 1 cat, 20+ chickens) and do a fecal float to look for parasites under a microscope.
OK, so I only worm IF there is something suspicious and/or the fecal float is positive, REALLY suspicious stools (you actually see worms), ...I can't think of any other reason. However. when we lived in the Midwest and our dogs got worms a couple of times each year and needed to be treated, I wormed the chickens twice per year routinely, and additionally if I found worms in stools.
And when I worm I use a known entity such as fenbendazole.
So you can see that there are varied circumstances and it really boils down to a personal choice.
That being said, I also have a daughter who works for a vet and can take in a fecal sample anytime something is suspicious (rarely, maybe twice per year including 3 dogs, 1 cat, 20+ chickens) and do a fecal float to look for parasites under a microscope.
OK, so I only worm IF there is something suspicious and/or the fecal float is positive, REALLY suspicious stools (you actually see worms), ...I can't think of any other reason. However. when we lived in the Midwest and our dogs got worms a couple of times each year and needed to be treated, I wormed the chickens twice per year routinely, and additionally if I found worms in stools.
And when I worm I use a known entity such as fenbendazole.
So you can see that there are varied circumstances and it really boils down to a personal choice.
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