I could have an excellent carpenter that just don't clean up well, or a good stucco plasterer but leaves wet stucco on my brick pavers for me to clean up with muriatic acid...Give you another example. 

The Caprate (NOI / purchase price) compares this property to other propertiesIMO, CASH ROI deposited to you back account is the acid test -- if you're happy, the rest is academic, but there are those who preach the IRR as the 'true measure'

I want to do a similar type of stain to my concrete floors, but I'm not about to play around acid washing myself. 

If the odor is actually powerful, you need to throw out the old carpet and wash the cement under it with powerful soaps and acids several times

I burned the candle at both ends for years and ended up with acid reflux from the stress I was putting my body through doing all the work myself while working a day job.  

If the fires took place more than a week ago and they were not taken care of properly, you can expect a large bill.Basically, the soot from smoke is acidic and will permanently discolor walls, carpet, ceilings, appliances, etc..

Determining those things on the fly (pun intended) could be considered a violation of fair housing.Birds are pretty messy (they tend to scatter their seed) and bird poop is very acidic which can hurt flooring and flat surfaces if not cleaned quickly. 

To acid stain it would cost $5,000.

Paul S. agreed, thats why i never have it... fortunately most of the rentals have nice hardwood underneath the carpet that can be sanded and restored... saw your earlier comment about floors and I have acquired a property with solid floors that needed remediation because of pets... i guess if neglectful owners let acidic dog piss sit long enough damage is done

Some makeup or cleansers do have acid in them and it can bleach out any colored towels. so we stock are bathrooms with makeup wipes.