In some cases, the renters installed cameras, new locks, etc., then stopped paying rent while still trying to collect it from AirBnb users.   

I'm a complete agnostic on camera brands. 

The plumber was able to pull up a clog the first time (the tenants were not there long enough to have made this, we don't believe) and the second time we had it scoped with a camera to reveal some corrosion and damage to the sewage line...We were prepared for cap ex and have a cash reserve but still sucks ha!

They may have nannies or other house staff but many are empty including both that are close to my home.  

What about security cameras outside or in common areas?

I know there have been cases where a live in nanny or housekeeper ended up being able to sue because they were essentially on the clock all the time, so their hourly wage was tiny.

I agree with Uwe, most illegal Hispanic immigrants I have run across (landscapers, housekeepers, nannies) have been hard working, decent folks.

My friends dealt with flooding and major sewage issues, all because they didn’t have the camera go down the pipes during due diligence.

Taking the opposite route has some advantages, especially if you are comfortable on camera.

Other than security cameras, any recommendations on how to handle this?