POLYMEM SILVER CAVITY WOUND FILLER 35cmx1cm PolyMem Silver Rope can be used instead of other dressings containing silver because the dressings support moist wound healing while providing a continuous silver reservoir for anti-microbial action. For tunneling wounds, will expand within the tunnel to fill dead space and is reinforced for added strength to ensure complete removal. Can also be used in cavities and undermined areas.