ACTIVE with screw attachment also suitable as a climbing aid bark wood We attach the highest value to your pet\’s health. For this reason, our Natural Living items are made of coniferous woods without resin canals. Resin is poisonous for animals. The woods we use do not exude resin and are dried extensively before processing as well. The glue we use is also non-toxic for animals and consists of a rubber mix or a cellulose mix.