There are few more based on the circumstances, some people check the car the tenant is driving, their punctuality for the first showing, drive by old rental place, personal appearance and hygiene, other little stuff to give you a clue what kind of tenant the person may be.I would encourage you to check out thelpa.com, they have a very active landlording forum and products that may of help to you as you get started.

Hi Everybody, Only 5 months into my lease (1 year agreement) I need to move out of my apartment because there are numerous problems in the building. 1) Poor management (no repairs), 2) lack of hygiene on the common areas, 3) bedbugs, 4) drug dealing, and 5) attempts of breaking into units.

Tile grout is permeable and needs maintenance to remain truly clean-able and hygienic.  

If plumber pulls out rubber ducky or hygiene products you pay for plumber."  

Is it lawful for the landlord to not provide hot water for hygiene reasons, when there’s a bathroom? 

Our lease clearly states that only hygienic paper is allowed to be flushed.I asked tenants from Unit 1 and Unit 2 if they flushed wipes and both parties stated they didn't.

No flushing of wipes, paper towels, feminine products, napkins, diapers, etc.When our plumbers go out to the property I asked them to write down on the invoice what they pulled out.

I would not leave it solely up to the tenant to deal with it...... but you need to attack the source of the issues which is often tenant hygiene...... mice come and stay where there are food sources, moisture and warmth.....

Clogged toilets when you pull out feminine products or paper towels?

I myself am not feeling great after ordering take out from an upscale restaurant that went on about their hygiene procedures for COVID 19, but you never really know.