Our Swiss Made Anise-Paradies molds are resistant to breakage and waterproof. For best results, you can wash the molds and use a brush to clean them off. Do not allow dough residue to harden in the mold. If you have dried up dough in your mold, soak it in water until the dough residue has softened and the mold can be cleaned perfectly. If you are working with several molds at the same time, place the molds that have already been used in water and then clean all of them after you have finished making your biscuits and cookies.