Timbermate Wood Filler is a quick drying water-based grain filler and wood putty. It accepts both paint and stain beautifully or it can be tinted to match any color.
This wood filler is easy to apply and won't become permanent until it's top coated. After it is, it is resistant to cracking or falling out.
Best of all, Timbrmate Wood Filler never goes bad. If it freezes just stick it in the microwave to warm it up. If it dries up, just add water and stir.