Aren't you  billing in proportion to use?   

Margins are already tight enough let alone taking on a triplex gas bill.  

I'm underwater with my mortgages and credit cards and bills.

Hello BP,I’ve seen numerous investors preach to invest in bitcoin.

I've had HUD forms filled out billing me for pro-rations that were the seller's responsibility, agents who have lost track of contingency removal dates, ... the list goes on and on.

A bill has been proposed in Arizona to make bitcoin legal currency.

But if they use it to excess, then the electric bill will be much higher than anticipated and if that month of high electric comes during a time that the tenant is facing hard times, they are more inclined to pay for their heating than their rent.

The roofer gave me a invoice with high level bill of material, and a statement that it has 2 years of warranty and brand name of the shingles.It does not say brand name warranty or model or batch number etc. 

Like many have said here, consumables are reasonable for tenants to foot the bill and replace themselves.  

@Bill Brandt funny you should mention Guam and the USVI :).