Thanks for sharing your Smurfee with us - you're his angel for saving him. Because of his breathing issue I hope your vet has had the good sense to counsel you against using the clumping litter that turns to cement (usually contains sodium bentonite or other "ite" used in construction). I work in rescue and many cats have been dumped off with blocked noses, runny eyes, because of this dusty stuff that turns to solid when coming into contact with ANY fluids. Some of the cats couldn't even breathe and were foaming at the mouth. Sad. The old fashioned clay litter is just fine (that's what I have always used for my cats for the last 40 years).

Also, remember that cats are carnivores - dry food was created for OUR convenience, not for their health and is known to cause obesity, CRF, tooth decay as it can damage the enamel (since cats crack their food, no molars to chew properly). http://www.cathealth.com/food-wet-dry.htm

I give my cats canned food with no by-products and hope to fix the issues caused when they were in shelters with only dry food available to them...