[njbchbum]

Could a bad background check on a potential renter allow a landlord to refuse to rent to the individual with that bad report?

Do any long term rental landlords have background checks done on potential renters?

[gomoho]

Why would you bother doing one if it can't help you determine who you wish to rent your property to?

[JCM200]

You should always do a credit check for potential long term tenants. Here is a site that I use. Tenant Screening | Employment Screening | Mortgage Credit Report| CTCredit
The fee (about $25) is passed on to the applicant. If they refuse to pay the fee or won't provide the info for the check, assume their credit rating is poor and move on.