So I had an ant problem in my unit while livening there and the landlord sprayed a chemical on the countertops to combat them after the store bought stuff I was using wasn’t cutting it.

None if the chemicals used today for termites are "restricted use" Make sure and buy a NON repellent such as fipronil (termidor) or imidicloprod (premise).

WHO recommended that e-cigarettes should be banned indoors, because they emit chemicals potentially as dangerous as cigarettes and have a potential passive smoking risk."

Asking price is $1,000,000  Below are a few of the details about the facility6 Gin San Self Serve Bays with new electric drying system 1 Automatic Drive thru Laser wash 4000-REBUILT Wash Select II Auto Teller with cash/credit card acceptance Standard Change Maker dual change machine Gin San Reverse Osmosis “Spot Free” machine Water softners with 2 alternating tanks for production and delivery Air Compressor 6 vacuums,( 3 regular, 2 fragrance combo, 1 carpet shampoo 6 drop shelf vendors for product purchases Compaq PC for credit card processing ScanCoin Currency counter Semacon Coin Counter 16 channel DVR plus 9 cameras with remote viewing capability Honda Power washer Full supply of tools, ladders, etc Inventory of spare parts and chemicals,Roadside Marque sign

Possible hidden damage in this area.Recommendation: Chemically treat the soil at probable entry points for the control of subterranean termites.Remove any termite shelter tubes from accessible area.

The chemical reaction literally cooks it's self into a hard plastic. 

Septic tanks, even though they're full of crap (no pun intended), are sensitive things - the bacteria are highly susceptible to overload, bacteria soaps, bleach, chemicals, and other stuff that simply won't break down or will kill off the bacterial load.

I have allergies (the main reasoning for removing the old carpeting) and didn't want to deal with potential chemical fumes.

Like every plant it is easy to kill with chemicals and it can not grow without water. 12k seems very expensive for spray & paint; except if you had to rip our drywall and wet insulation etc..Also, your inspector should have questioned the absence of a floor drain - at least here in Milwaukee every house has one and if you can't find it, you know it's been floored over.

A product called "Nature's Miracle" (you can get at any pet supply store) will break down all chemicals in animal urine but, if it got through the pad and on the sub floor, I would definately replace and not allow pets anymore.Ever smelled a home in the summer with soiled carpets????