Hi. I'm Dr. Gotthelf. I have been a vet for 33 years and I would like to use my experience to help you with your pet's medical problem.
Most older cats with constipation problems respond well to 1 tablespoon of mineral oil (not vegetable oil) added to the diet daily. It is not digestible and so it stays in the digestive system and puts a slippery coating of oil on the stool. Old cats lose the ability to contract parts of their bowel and, when they are on mineral oil, when the good part of the intestine contracts, it really helps the stool move across the part of the bowel that is not contracting.
He eats dry cat food. How can I slip this into his food unknowingly--he's very clever. What about Lax-eze--it seems to take less
You can mix it with his dry food. It has no flavor. You can also squirt it into his mouth a little at a time. I( would not recommend Lax-Ease as it is not an intestinal lubricant.