Or a humidity triggered fan works well too so when there is humidity in the bathroom it goes on automatically. 

When I do the same (pick anywhere, with an investor focus) I select no snow and ice, no hurricanes/tornadoes/storms, no earthquakes or flooding , stable geology/less foundation issues, low humidity,  no state income tax, reasonable property tax and not nut-so pro-tenant   So OH doesn't fit for weather.  

I would get into the foothills if you want to beat the heat :) We may not have the humidity, but still gets pretty hot out here!

If you don't get the source, the smell will return if the house gets warm and humid. 

another trick you can do to get rid of humidity is to get a hybrid electric hot water heater that will work as a dehumidifier..

Also with the humidity here I've had to pop a few off and trim them after they swell.

Here in Alabama, the heat and humidity bring it straight out of the subfloor.  

I don't see why any owner should care what temperature the renter runs the A/C at, or how many hours they run it.Trying to dictate that without putting it in the lease seems like it would be a hard sell in hot humid areas like TX, FLA, central Calif. etc...but might possibly fly in ND, or Minn., etc...And because it seems like an outlier type item in a lease, it's probably best to verbally point it out vs just saying initial here and pointing (kind of smoking over the issue), seems like a fair way to rent--IMO--if that's what you want the renter to do... vs verbally trying to dictate a temperature.But as I said earlier, it's probably a hard sell in many areas, meaning some prospective good renters will go rent elsewhere if you dictate that in the lease upfront. 

We are working a more sleepy submarket that is very hot and humid, in south Texas. 

Arizona cash flow seems minimal & competition seems flooded but I dont think I want my kids to grow up in the sh*tty east coast weather & essentially grow up inside due to the intense cold in the winter & uncomfortable humidity in the summer.