It's my opinion that you should use a heat treatment and not a chemical treatment as heat treatments are comprehensive and can be guaranteed, and spray treatments do not always kill all bed bugs and can be a waste of money.

Or what is your process to guarantee that they don’t lose their money if you decide to sell to someone else or get sued and lose the property?

It's pointless to ask "what-if-I-fall" because you will 100%, I guarantee you WILL make mistakes, there will be failings, and as long as you mitigate them into a safe setting so they are survivable ones, like learning to ride a bike in a lawn vs out on a highway, or in REI using an experienced REI Realtor/Consultant and experienced PM's vs on own for everything, your going to get through it and be all the better for the experience. 

You are priced to sell in these occasions, but you're guaranteeing a good house if you own other houses in that area and want a good neighborhood. 

What guarantees for success does it make and what outcomes are measured regarding the validity of the "program"? 

Basic recommendations- Deed of Trust-Personal Guarantee-Promissory note-JV agreement (to protect the lender from violating usury laws)-clear late fee schedule, cure period agreement-cross collateral if the subject property doesn't safely cover you with enough equity

I have a guaranteed renter who gets section 8 and I could use them to get my portfolio started.

Even if the Tenant closes their accounts, Obligo will guarantee the payment and go after the tenant to collect.

Short term is managing cleaners, dealing with guests complaining about cleaners, random **** breaking, reporting damages do Airbnb, seeing a big *** party starting at your house at midnight (your property manager isn’t on call 24/7 and are charging for every hour spent), dealing with pissed off neighbors etc.You need to weigh all those costs (management + cleaners stack) minus potential high weekday vacancy minus Airbnb’s rising fees and declining service plus your time and headache spent, VS an easy / much more guaranteed paycheck.There’s a lot of guru BS in the STR game.

Is the lease guaranteed by anyone?