Putty mixture is water based, eco-friendly clear sealer, which has to be mixed with saw dust. Suitable for all types of interior and exterior wooden surfaces. This easy-to-use, user friendly product provides optimum filling, and sanding properties. The product has been designed to mix with Saw dust until get a fine paste, and apply directly on selected area and on uneven surfaces including tiny wooden holes. Repeat the process until you get a fine finish.