My old cat had an an issue at the end of her life and peed on the floor. It soaked through the floor and dripped down through the drop ceiling I have in my office. I found it from the popping sound and bright flashes my densitometer was making as it shorted out from the cat pee. She also got a monitor and a drum scanner mounting station that both survived. That was an expensive accident she had. Hopefully your lens won't be so expensive. And while we did have her put to sleep, it had nothing to do with this incident.