TKS deicing fluid is isopropyl alcohol and ethylene glycol (antifreeze). You
can spray it on a plane safely, including plexiglass, landing gear, props,
etc. I've also bought cheaper non aviation stuff from home depot, and mixed
it with hot water and sprayed it on the plane as well, which also works.

It will make a big slimy slippery mess of a hangar floor and it doesn't go
away or evaporate.