@David Sussman They are adults, it's up to them to figure how the money is collected and paid. 

If you set standards and stick with them, you'll catch shenanigans like this.The policy should be that every adult passes your screening, period.

I know a couple of female real estate agents that may not have been raped and murdered if they had just pack a little 380 auto in their purses.

Quote from @Jerome Wiley: Can the landlord ask a perspective tenant how many adults will reside at the rental property?

My long-term tenant wants out of his lease due to his adult son passing away.

I know someone who had trouble remembering to use a cutting board as an adult because they grew up with butcher block. 

Every adult residing in your rental should apply, be approved by you, and sign the lease.

Once you are an adult, you can do what you want with your money. 

Total still owed $13,600 (rent, late fees, legal fees) and $550 for the locksmith.Place reeks of pot, she had her adult son, who by the paystubs left behind only made $152 a month and spent his days laying on the couch (which reeked of pot) smoking and playing x-box (abandoned and power supply cut up). 

I'm renting a 3 bdrm-1 and 1/2 bath rowhome to a tenant family of four adults who are habitually late with their rent payment each month.