Regarding roaches, provided that the property is vacant, there is much success using Boric Acid.

It was thousands of dollars of damage as the carpets were saturated with cat urine and a feces stains, which progressively consisted of more bile and stomach acid, as the cat slowly starved.

we've tried 2 types of acid and pressurewashed...any good ol' boy tricks??

In finance and accounting we look at a "Quick Ratio" (also known as the Acid Test) this shows the ability of a company to meet obligations, but this only looks at current assets or liquid assets and current liabilities, real estate is not a liquid asset.So we move to other ratios like "Current Ratio" and "Cash Ratio" these to help to illustrate the ability of a company to cover current debts.As to mortgages or long term debt, coverage is difficult to predict due to uncertainty over longer periods, but by looking at the current coverage and cash available we can see what funds remain for these other obligations.Most everyone is familiar with the debt to income ratio we suffer through at a loan application, say 24/36, meaning that you should not pay more than 24% of your income to current liabilities, revolving accounts and car loans, the 36% includes the 24% to establish your ability to cover the mortgage, total debts should not exceed 36% in this instance.

What I have done....1 regular mopping with cleaner and bleach2 brush with acid wash3mop with the “microbe” ( I forget exactly what it is called) wash made for that.Use grout sealer when you’re done.

Let dry overnight.If that doesn't work, use a very small concentration of muriatic acid with water.

I put boric acid down a couple of times throughout the house, some of them crawled out into the open and died, and that was that.

A loan constant is much like the acid test in measuring debt coverage, while it can imply performance it is not at all like the earnings per share for example.

Muratic acid should not damage drain plumbing.

Cleaning with acid and leaving it on, especially over application, can cause similar problems over time.