Duck Poster Putty DUCPTY Great for temporary mounting of paper items such as posters, charts and decorations Ita€s a safe, clean alternative to tape, nails, glues, tacks and staplesa€”wont damage mounting surface. It is non-staining on most nonporous surfaces as well as nontoxic. Putty will not dry out. Ita€s removable and reusable again and again. Nontoxic.