They have many cameras pointed at it.

I'm hoping for someone that has good equipment such as snake camera, etc in order to see if we can't figure out a way to fix the problem without digging up the pipes.

At the time everything is in my head, but I found that after a long day of previewing and trying to gather and collect my thoughts, that everything is a mess filled with bad photos angle, even worse videos of me running from room to room with the camera pointed to the ground or the realtor's butt, and illegible notes that seem meaningless afterwards, or even no notes bc it was all in my head at the time.. 

.- Camera and lighting.

Sheets would sternly look in the camera and say "because no one wants an alligator" He called non cash flow property an alligator since it ate your profits.I hope this strategy helps

But in your example, a full sewer system camera inspection may have allowed you to qualify the risk and build it in to your offer price.

An inspector would not have sent a camera down the toilet to find that.  

Get a surveillance system (they don't have to be expensive - though I get professional systems installed on the homes I live in)3.

@Drake AllenSecurity cameras writing to a DVR all over your properties, and make sure you have one looking straight up and one looking straight down the main road your property is located on.

- Camera, ADT - Looking for a cost effective solution.