If you remove them for an unnecessary reason such as noise complaints, you could face legal troubles with the ADA.Talk with the handler and voice your concerns in a respectful manner. 

Despite all the noise about nuisance and renter displacement, it's about lost revenue.

Also, is there a point where it's up to the tenants to solve their own problems and how do you draw that line--eg if there's noise or loud music in the neighborhood or other quality of life issues that don't apply to the physical integrity and function of the property.

Something happens that means they have to vacate, even just overnight - overflowed sewage due to something upstairs tenant did, a ceiling that fell down (I think caused by the tenant banging her broom on the ceiling because of noise), or if there was ever a fire, etc.The tenant has to vacate and they expect you to pay for their hotel bill.  

Imagine loud brake screeching noise.....rrrrrrrrrrrrkkkkkkkkkkk!

When you go over the lease, provide them a tenant instruction sheet with your welcome packet that explains:- how they can pay rent- how to make a repair request- watering restrictions- how to operate unit's HVAC, thermostat, care of garbage disposal, location of main water shut off, gas shut off, breaker box- numbers or links to turn on/transfer utility accounts- how your city enforces noise ordinances and how this may effect those who violate it (BTW, your tenant  blasting his music so it can be heard at by other residents on the block  at 10 am is just as bad as if he is doing it at 4 in the morning). - anything else you feel tenant should knowOthers have given you some great suggestions for collecting rent automatically.

Is it something they have a passion for or are they just doing the day to day grind 10.

Hey, I love kids, but they cause damage and noise.  

I'd make it about noise.  

How about when family comes to stay for two weeks and you get complaints about noise?