Mix up hot sauce and water and paint the sills they chew on.
How to fix a window sill chewed by a dog. I imagine the easiest way to fix that would be to cut is straight. It only takes a couple of hours (drying time for epoxy) and some 2 part wood epoxy to repair it and get it looking good as new! Wood filler alone won't fix that little problem, you will need a piece of wood the same thickness of the existing sill, clean up the area the dog chewed on with a saber saw, then cut a.
In this video you will see a cary handyman repairing dog damage to window sills. Jump to contents [ hide] 8 essential steps to restore your disfigured wood furniture. Estimation of the damaged area.
Get another window *stool (as pointed out by ninicraftone) and cut out a bit that matches the chunk cut out of the one on the. This can be done with a putty knife or a similar tool. This worked for me when i had a puppy that insisted on chewing only on my antique coffee.
It must be applied with a paintbrush. If the stain has been newly made, first make sure that you apply a stain blocker. Once the repair material is dry you can sand it.
That said, you could cover it with a piece of plastic too. Unfortunately, the owners' siberian husky got a little rambunctious and chewed up the window.