These pads are impregnated with a heat-released deodorant that doesn't merely mask autoclave odors, but actually neutralizes them with one of four pleasant scents. Protective cover melts in autoclave, allowing deodorant to be heat activated. Neat and easy to handle, simply unwrap and place a pad in each bag prior to autoclaving. Odo-ClaveŽ pads are 32mm (1-1/4") square. Packed 10 pads per bag, 10 bags per box.