Also would not warranty a drain they cleared and treated for roots, after specifically paying to make sure I had the warranty.

Emergency plumber came to snake the drain, finally repaired around 4am. 

Floor drains in the garage could be connected to the septic system 

The tub has a small leak, but I believe the leak is from the metal drain that has deteriorated and there's a piece of it missing that forms the seal.

An informal rule of thumb I've found is that if two months rent is greater than property tax and insurance combined, the numbers usually work well.A couple random expenses I've had from my two properties since April (after tenant moved in):Central air issue, broken screen on screen door, lack of hot water in shower, clogged drain from toiletI'd be careful in renting to a friend. 

We even installed a french-drain and retaining wall to help prevent a return of the foundation issues.

This is all based on lot size, soil type, perk rate, number of dwellings, number of bedrooms, lot loading calcs and boundary lines in relation to the drain field and tanks.

As ****** as it was to discover this 12 hours before I was supposed to board a plane I successfully used my big boy auger to cut and pull the roots.

He was able to successfully snake the main drain going into the alley while I shop vacced up the water the best I could (had to empty my vacuum 7-8 times).I borrowed a huge fan from a friend and rented a carpet drying fan from Home Depot.

Even if you save 50% on a $10 drain stop then you will need to be buying a lot of them to save any real money.