Leech Adhesives developed our real wood filler so that wood working professionals and DIYers would have a product that behaves and acts just like real wood because it is made with finely ground fir, our superior-grade real wood filler is easy to sand, drill and cut without fracturing, as well having the ability to stain the same color as the substrate, go for the best and ultimately the most cost-effective wood filler product on the market and stick with leech.