indeed, sad but True!
although most now are denatured in a way as to make it Very unpalletable, Bitrex (denatonium Benzoate) is added to some, the same stuff that`s used to stop people biting finger nails.
something also worth a mention is it`s Flamability too!
this stuff should be in the medicine cabinet only.
So long and Thanks for all the Fish ;)