Best site for tenant screening in Chicago at a reasonable price?

[Angel Marquez]

Hello I am new to bigger pockets and to real estate in general. I purchased my first 2 rental properties earlier this year in Chicago so I'm pretty much a newbie. I am wondering what sites you guys use for tenant screening (background/ credit check). I have an open house tomorrow with a large amount of potential renters coming to look at the unit. How do you guys filter through potential tenants? Any info is appreciated, thank you