Returning security deposit

[Anthony P Gosselin]

I had a tenant message me saying that he is officially moved out after renting for 6 1/2 years. I can't recall the last time I had a lease signed(stupidity on my part). He gave no notice of leaving. I sent a text asking for the rent on Thursday and he text saying he was moved out on Friday. I'm gonna no to inspect the house today. Should I return the deposit? I would think that after 6 1/2 years I could eat up a security deposit bringing the place to rentable again. Any advice is welcome.