Step 5. (Cleanup tips)
Whatever extra wallpaper paste you have left over, may be safely stored in a sealed container for months, without harm, for further use.
The paste is non-staining, and non-toxic. You will also be surprised at how easy it is to wipe down your working surface with a sponge. It's not like working with glue.
Even though clean-up is not a problem, I like using the sheet of lexan, rather than the tabletop, so I don't have to clear off any table surfaces. The lexan sheet stores easily, out of the way, leaned up against the side of my refrigerator, alongside my plastic square templates.