Will compost worms die if you add poo from wormed dogs

Hi, I'm really keen to start a worm composter for our two (large) puppies. One of the things that concerns me though is that we worm our dogs monthly with an all-round wormer (we use either sentinel or interceptor chew tablets). Will this have an effect on the compost worms? Will they die if they eat the poo?

Thanks, Lori


Hello Lori,

thank you for your concern for our environment and your idea to recycle dog poop with the help of compost worms!

Recycling dog poop in a worm farm works really well and we have worms on our farm that have been feeding nearly exclusively on dog poop for more than 10 years now.

Usually worm poop is easy for the worms to eat and digest and it is not harmful to them. But your concerns about dog poop from dogs that have been treated with deworming medication is a valid one. There could indeed be quite a lot of the medication that was intended to kill any worms in the body of your pets still be present in their feces which could be lethal to your compost worms as well once they feed on the contaminated poop.

I suggest to throw away the poop that your dogs produce for up to 48 hours after you medicated them before you recycle new poop again in your worm farm. This period should be sufficient for the medications to have left the bodies of your puppies.

I hope this will help you to get your worm farm going. All the best and happy worming!

Kind regards

Stephan Kloppert
Author of "How to start a profitable worm business on a shoestring budget"


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