Tenant grew pot, ruined downstairs, advice?

[Morgana Wyze]

I had tenants in on a 2 year lease in CA. They paid rent through the pandemic. But when their lease was up, I wanted out of CA rentals, as they were passing legislation on rent control.. I could not do tenant inspection through Covid, I had moved to th East coast. I  put the house on the market and  then found they had used the downstairs area as a pot grow.. All of the engineered wood was ruined, 1500 s.f.  I had to repair electrical and plumbing issues. The house is under contract for 10k less than asking ( and I put it on the market 25k less than comps). This makes me sick to the stomache, but I will probably return the tenants deposit in a "cash for keys" just to get them out for the close of sale. These tenants had a "drug free" clause to their lease prohibiting drugs and a pet free lease (they had pit bull puppies, snakes, turtles and rats). What I learned from this is to never do a 2 year lease and inspect every 3 months. Any other advice?