If the tenants are young adults without children, then many of them will only use a shower (though, there might be a few occasional ones who are looking for a tub). 

They can also be removed by an adult in the event of an emergency.  

And quite frankly, now I'm scared.John Taylor Gatto, a retired school teacher and activist critical of compulsory schooling, asserts, "We could encourage the best qualities of youthfulness – curiosity, adventure, resilience, the capacity for surprising insight simply by being more flexible about time, texts, and tests, by introducing kids into truly competent adults, and by giving each student what autonomy he or she needs in order to take a risk every now and then.

The 2 tenants already had 1 dog, their son has brought in another.To account for this 3rd adult and 2nd dog (not on the lease) I believe I should do the following: 1.

Let's say I have a tenant for many years who is suddenly being inconsistent with rent payments, or an adult member of the household becomes suspicious, e.g., complaints are received about an adult child's criminal behavior.

(I had a bout of adult onset asthma and I don't want anyone else to go through that)

But if it's not reasonable, you need to get it to market rates.Basically you want to talk to the person adult to adult.

It's not proper remediation, it's illegal to not do proper remediation and if you think selling a remediated house might be a stain on your reputation, try selling one where you claim to have remediated it but haven't (which is what this advice is).Meth is nasty, nasty stuff causing advanced and rapid neurological damage in children and pets and slower, but no less advanced neurological damage in adults.  

Their adult sons stay in one room when in residence and sometimes visitors are placed there.

With income if you don't have it in your screening - I would only use a maximum of 3 adults to qualify.