My cat puked at a scratcher pad. I do not think it is washable, or at least I do not have a non-toxic puke solvent which would not destroy the cardboard. Or maybe I should try water? Too late, I have already disposed it and made a new one:

Lifehacks:
I have only tried that white “household” glue which, I suspect, came from the same barrel as a wood glue. It works well.
However, gluing together a lot of sheets of cardboard is tedious. Fortunately, I had some thicker cardboard panels. Combining them worked pretty well
(I use 3 criterias:
– it took less time
– cat likes it
– cat did not ruin it yet)

Also, if you are suspecting that your cat is capable of abstract thinking, you might consider shaping the scratcher pad as a fish.