Backer plus tile will change the level of the new floor a bit more than using leveling compound and vinyl plank.

Btw, if you didn't leverage, and cut your annual cash-on-cash returns to about 10%, your total equity (investing $20K per year) over 25 years would be just $2.1MM.The power of leverage + compound interest is astounding!!!

I have a tenant who informed me after moving in that her child takes medicine to help him go to the toilet however, it causes the toilet to clog everytime which then leads to the toilet having to be rodded out because the bowel is too large to be plunged.

It has to do with using a non-amortized (simple or compound interest) type of account to pay off the amortized loan.

Leverage and compounding. 

It's one thing if they pay late as long as it doesn't snow ball into the next month and they take care of the property.If you can't get them into a payment flow that stays the same month to month, they are living hard in the unit, etc. then that is a negative compounding affect on your property that will cost more in rent for the long run.No legal advice given.  

I am really new but I cannot imagine bowing to so many failures on the tenants side.

I manage projects for clients on a large family compound and I don't allow smoking by anyone, anywhere on the 2 acre property.

And partially because the American people required it -- they didn't accept political stalemate and bow to the ridiculous threats of the party leaders.Sadly, the two Presidents we've had since Reagan and Clinton were more about divisive policy as opposed to constructive compromise.

If your lease doesn't currently specify when rent is due and when it is late, along with late fees, how they are compounded and actions taken with specific dates then I would highly recommend amending your lease and instituting these specifics.