It's a nuisance but usually petty in the scheme of things--curse words spray painted on walls, toilets clogged up with toilet paper, holes punched in walls, carpets purposely stained with Kool-Aid, etc...Some (very few--but it happens) will have to be carried out by 911 first responders--either dead from natural causes or from self inflicted reasons (goodbye cruel world kind of stuff). 

The only thing I buy extras of is pillowcases as they take the most abuse.One thing we do when stripping the bed is to have a bottle of Zout or the like nearby and we spray any stains/spots we see as we pull them off.

Look and see what AC model they  haveLabel yours with permanent hot pink spray paintConcrete the unit into the ground -slab 5 inches deep and weld to it.Lock up disconnect box so they get electrocuted when they do the steal look on craigs list for the HVAC guy selling them and call him to come to random addressesAim cameras where the truck parks and don't let them know you can record platesMotion lights that make sound, there's some barking onesFence the yard, put a big dog there when it's vacant, thinking Doberman.Put sign up about dog who bites.Do you really know which neighbor did this? 

I can't thank @Kevin Farrell enough for recommending a pest control specialist that sprays.After calling a couple companies, I found one that sprays for $300 per room. 

I did everything possible to help this person but at the end of the day I could not let him just live out his years in the house we bought and paid for legally. now you have defund the police here in Portland and they have decided to replace them with PARK rangers that have no protection no Bullitt proof vests nothing but pepper spray and their negation skills..

If you've ever renovated a house that had cat urine or cat spray, you would totally understand.  

@Javontai Shamburger My brother did a fire rehab and he sprayed the studs with BIN to block the smoke odor.

Yiu can pay a painter to spray insides and fronts of diirs.

I have purchased a house that we are currently flipping and for whatever reason the previous owner sprayed white semi gloss paint to re paint the popcorn ceiling.

So the safe (and legal) thing to do: spray down any loose/broken tiles with some water so that they don't have dust, wear a high-filtration dust mask and gloves, put them in the trash and then your gloves with them, then you have a floating floor installed over the tiles.