They do all kinds of stuff and used up all the chemicals, so when they leave the water is murky.  

@Karen Casey just a thought that “good-looking tile” doesn’t look good when tenants don’t keep up with grout cleaning or use harsh chemicals.

When they discover a sinkhole or long ago forgotten chemical dump under your property, your equity is eaten into.

The sandwich – like other “junk food” – will also trigger the release of brain chemicals such as dopamine, which activate the brain’s reward system and provide a feeling of pleasure.

The treatment quotes I got seemed crazy ($1500, using dogs, heaters, chemicals). 

Cleaning the surface of the fiber will make it look better and even make it smell better in most cases, but chemical application and subsurface extraction may be required to correct the issue.

We opted not to use a chemical stripper because we try to avoid chemicals as much as possible.  

Nine chances out of ten the roof is a modified roof (asphalt chemical composition; essentially a one square shingle) which is applied using a torch or set in cold process (roof cement).

And depending on your layout, the pest guy might need his chemicals to sit and dry for a few days before any mulch is spread, for instance. 

I had the HVAC system cleaned chemically for mold as well all the ducts cleaned.