AES wrote: ...
Recently Norwegian roof rats in garage ate the cruise control wiring and
> hoses on our auto, and did similar damage to the (considerable more
> expensive) car of one of the tenants, who pays a bit extra to park in
> our garage (nasty beasts!).
>
> Cost of subsequent pest control service should clearly be a pro "rat-a"
> deductible item. But, since she's a very good, long-term tenant, we're
> also covering the (substantial) cost of repairs for her car without > arguing about it.
...
I don't see it as deductible expense tax-wise; I'd have turn to insurance before volunteering the repair out-of-pocket--still would make the claim for both vehicles. Might get turned down, but I'd at least go for it.