I totally agree with and practice many of the strategies in the replies when it is necessary.   

In our practice, any property 6-units or greater in size is evaluated (cost vs benefit) for fitness to be sub-metered.Once you sub-meter the water, you can hold tenants accountable for their consumption.  

For Best Practice, do you have one account that you put Maintenance, Vacancy, and Capital Expenditures into, or separate bank accounts for each one?

I've never collected a tenants rent (all my properties have been managed by a PM) however I think it's good practice to issue receipts for all cash payments.  

It used to be a common practice a decade ago, but while I haven't checked recently, I'd be very surprised if it were still happening at most courthouses today.

Practice makes perfect!

Yet it was enough to trigger an obsessive interest in real estate investment, something I studied in college but never practiced. 

Evidently, with that many cats, litter boxes are not practical, so unfortunately, these cats get kicked outside to their "business".  

Oh yea, I also had to replace the two toilets because the well water was so hard that it rendered the old ones practically useless, which is saying a lot considering that it was built in 2008! 

It got me wondering just how many folks are aware of outcomes of some of those practices really are.