I'm new at running background checks. I screened a set of tenants by reviewing income and application. Before calling references, we used ScreeningWorks to background check and I called customer service to help explain the reports. For example, on the couple we ran the credit scores it came back with one suggesting that we obtain a higher deposit since they had payment issues in the past. The criminal background only goes back as far as the state will legally allow it to. You'll have to decide your policy on any legal/criminal issues. Both tenants had criminal activity; however, the male had a common name and had never lived in the state where the crime was committed. The courts scrub the social security data on criminal cases so the screening has to go by registered addresses, date of birth, name, etc. If there's a common name, then the data can be wrong. Sometimes, these reports can be a bit tricky to read so it may not be a bad idea to share the report with the tenant if there's a question. Tenants may dispute their records if they are incorrect.