Preventative measures for pets

[Jacob A.]

I'm a Landlord who allows tenants to keep pets, although my patience is slowly wearing thin due to the odors they leave behind. I'm wondering if anyone has suggestions as to ways to limit pet odors/damage. An an example I am considering only installing vinyl tiles when it comes time to replace carpets as it is easier to clean (does urine flow through the joints in the tile?)

Wondering what people think of employing a service in which someone visits the rental property once a quarter with a UV flashlight and some pet urine odor destroying enzyme. Look for all spots where there is urine and spray this enzyme (Anti icky poo or Nature's Miracle). Are there such services and how much would something like this cost? Would the enzyme destroy the mark where urine fell, so that one does not need to spray the same place again?

Any other preventative measures preferably that can be done remotely or through others at tenant's expense?