The reason for diluting the injectable cattle ivermectin 1:10 with propylene glycol is to make it easier to measure the tiny amount of product needed for your dog. It is much easier to measure .3 cc than to measure .03 cc.

Ivermectin is the only OTC product that is readily available for HW prevention, I believe. I've been retired almost exactly 3 years now, and things may have changed. I believe that if the HW drug says "for dogs" you must have a prescription from your vet (Ivermectin injectable is "for cattle"). I know a few vets hang out here on the THF, so maybe one of them will chime in. Most practicing veterinarians, as well as the Texas Board that watches over us, require that dogs get annual HW tests before they can sign off on writing a prescription. This is to ensure that an unsuspecting dog owner doesn't give HW preventative to a HW-positive dog.....which could be a train wreck.

Fenbendazole (SafeGuard, Panacur) is an effective wormer for most intestinal parasites. It does a great job on whipworms, which many other parasiticides don't control. Unless you have a recurring worm problem in your kennel, you probably don't need to give it monthly, as you do your HW meds. A practical approach might be to give the SG every 3 months, when you change your dogs' Preventic collars.

Thanks! I will look into the Preventic collars as well, usually use Frontline for ticks a fleas with good results.

Thanks for the information, the dilution reasoning makes sense now