Quest gel, containing Moxidectin, is best used in November/December, after tapeworms transmission ends, to treat and control parasites in your horse. Each tube of Quest gel treats large strongyles, small strongyles, roundworms, pinworms, hairworms, stomachworms, bots, as well as encysted small strongyles.
Be sure to contact your vetrinarian for assistance in the diagnoses, treatment and control of parasitism, particularly to reduce compound resistance in parasites.