I just don't think it's possible for me to got to a website and check my net worth every day or week for the next thirty years, and voting for (to pick a hypothetical example out of the blue) any spray-tanned clown with an improbable bouffant coiffure who promised to make the stock market go up.

I simply have them spray water on a section until it has soaked in and it scrapes right off, then mud to level.

Just pour a generous amount of white vinegar into a spray bottle.

Probably just spray and pray mentality  

I was legally sued by a little old lady because I dismissed the criminal charges against her spraying a guy with mace, then hitting him with a taser. 

(salt and pepper, cooking spray, coffee and tea grounds, etc?) 

Before while wading thru posts,  I was commenting to myself this is a fire hydrant of concepts just spraying out.  1.  

We take out the trash, we vacuum, we mop, we clean the toilet, we spray door knobs and light switches, we clean the countertops, showers, well everything. 

But that last time -- anything could happen.You need to carry around pepper spray and a gun if you're worried about any sort of physical confrontation with this kind of trash.

Lots of people use spray foam to seal the attic and then put the HVAC there.