Copper mesh is a unique material that prevents from entering your home or office building. Specially, copper tastes bad to them so it is an effective if tightly placed. This knitting mesh will help . Features - ColorOrange - Material: Copper Wire. - Size: About 100.00X10.00X0.10cm/39.30X3.93X0.04inch. - Because of the way the mesh is woven, it is very difficult for to chew through it. - Unlike stainless steel mesh, copper tastes bad to them so it is an effective if tightly placed. - Copper mesh is a unique material that prevents from entering your home or office building. - The Copper Knitting Mesh is a copper mesh wool material that is rust-proof and . Stuff it into openings around or other holes and cracks in the structure and keep rats, mice, birds and other wildlife out. - Easy Install. Use caulk to help hold the mesh in place, lay out a of caulk on either side of the hole or area you want to cover with the mesh, then press the of the mesh into the caulk and you've sealed your opening. Package list: 1 roll Mesh