I used furnished finder and keycheck to find tenants, screen them, and collect rent/security deposits. 

Damage is always on the tenants and comes out of their deposit. 

This needs to be highlighted in the lease and acknowledged by them.Security Deposits: You can’t use their security deposit for routine cleaning, but if they leave things in bad shape beyond normal wear and tear, it’s fair game to deduct cleaning costs.I’d start by having a straightforward talk with them about the importance of keeping things clean for health reasons and property preservation.

So there is just not that big of market for all these people that think they are going to loan EM deposits. wholesalers doing any volume have their own money full stop and are not going to look to others for funding of EM..

Do you have to keep the security deposit in a separate account?

The information is typically - lease start and end date, how much rent is, what the security deposit is, and how much in advanced rent there is.

Deposit that money into a cd or mm with them.  

Your bank may not allow you to deposit them. 2.

I do a lot of direct bookings that take security deposits, but with Airbnb, they are always tough.

An estoppel certificate is a form you have the tenant sign that confirms their lease start date, the amount of their security deposit, and other things.