When it comes to applying stains, the wood variety and type of stain will determine the best application process. Stains are best applied with a bristle or foam brush, or a cloth. As a general rule, the smaller the pores of the wood, the more stain that will be required. If you are working with wood such as oak, which absorbs stain quite easily, the stain should be stain worked in with a cloth and swirling motion. On the other hand, if you are working with a tighter-pored wood such as hard maple, you will need to apply a significant amount of pressure to ensure the stain is absorbed. In most cases, prepping your wood with a liberal coat of a pre-stain wood conditioner will make the application process much easier.