Is it your expectation of 2-45 gallon bags per unit, per week?

 $300 is huge, I just last month had a 21000 gallon leak and the water bill was only $110 instead of $30. 

The only reason I got rid of it a few months ago was that it was approaching 200000 miles and gas is $4.50 per gallon.

A toilet with a slow leak can burn through thousands of gallons of water per month.Inspect the property and see if that's the culprit.

You can find it in Home Depot or Sams Club in Gallon sizes for less than $20.You get a pump sprayer (like the ones you find in the garden section) and spray the concentrate on the walls ceiling and floors.On the walls and ceilings you spray it until the ODO-BAN is dripping down the surface.

Its grey as in a little mouse whispered into a gallon of white paint and suggested it be grey. 

This way the only weapon needed to win the battle is a paint brush and a gallon of the matching color. 

In fact, he swept up 2 gallons of it.

You need to find a new handy man lol, price out panel board and a gallon of paint and tell me how that should be a $1,200 repair.

@Jonathan Klemm well I’ve had my share including sewer lines breaking and hundreds of gallons of raw sewage backing up into a newly remodeled unit among many, many other gross and unfortunate clean-ups.