Hey VK, mu dog has had a cancer tumor on his anal gland area "removed" twice. I haven't been able to get the ivermectin pills, so I went to my local feed store and bought the " horse paste 1.87" he detests the flavor so it was a fight to get him to take it. I noticed the tumor coming back again. It gets big and hard and then he can't have a bowel movement. I decided to rub the edible paste right on the tumor and it has shrunk considerably in just 4 days and he is poop'n again. I also started rubbing it on other places on my other dogs and his " fatty tumors " are also shrinking... I stopped feeding dog food a couple years ago and cook for them too!