Doing stencils?  Be VERY sparing with it.
For those trying to use this Window Wax Glass cleaner to do stencils on windows, as we did in the 1950's.  YOU HAVE TO BE VERY SPARING when you dab it on with a DRY sponge.  If you load it up, it gets very thick and hard to remove.  The same goes for using it as a regular window cleaner.  A little goes a really long way.  Go for a really thing haze.  I had street-side windows in my house in Boston and people walking by could look in.  I used glass wax and a very large geometric stencil to obscure the windows but still let in light.  I had it up for 10 years and it just rubbed right off.  So be STINGY with it and you won't have problems.
Rating: 5 stars