@Joseph Lewis, Although there are some landlords that do quarterly inspections, every six months is doable for most tenants, and, yes, you will definitely want to include wording about doing inspections (necessity and cooperation of the tenant) in your lease agreement.

Once the animal becomes a "medical necessity," they are no longer an animal in the eyes of the law, they're basically a medical tool like a wheelchair (as mentioned) so you can't charge a pet deposit for them.  

With the direction i am looking to go in now that is going to be a necessity.

They have dropped in cost and the Smartkey feature seems to come standard with most Kwikset locks now.The cost and the necessity ...

Repairs cannot be arbitrary: they have a checklist of very basic necessities, and if something doesn't meet that, they make you fix it.

But, how do you explain the necessity to invade their homes every 3 months?

Rochelle, Heat is a necessity and AC is a convenience.

A/c is luxury in Illinois as well as hot water...not a necessity.

One roll of paper towels on the kitchen counter with one garbage bag.  12 pack of bottled water in the fridge.I think of it as providing the kind of little life necessities that most people don't think of until they need it NOW! 

Quote from @Trevor J Dammon: I see lots of talk about cash flow and the necessity of cash flow to achieve financial freedom.