QueenBird Copper Mesh with Packing Tool - 5 X 30 Feet - Blocker for Hole - DIY Hole Filler, Copper Fill Fabric, Ideal for Distilling, Pure 100% Copper Roll

I just installed it today as a mouse deterrent so I havent had time yet to see if it worked, but I assume there should be no problem as general research indicated mice shouldnt be able to chew through it. I liked how thin this mesh is, so its really easy to shove in between cracks and holes--I suggest using a drywall scraper to help shove it in, and then seal up the whole crack with caulk. EDIT: No new mice as of a year! So it seems to have worked.

This was great to put on the outside of our house on the brick to keep bats out. You really cant even tell that its on the brick

So much better ( for me) than steel wool.

so far so good with sealing holes

My atypical application involved using the copper mesh as a heat transfer medium between two flat surfaces. The springy copper mesh made good thermal contact with, and a path between, a heat source and a heat sink.

This is easy to use but no where near the quality that my professional pest control person used. It is very lightweight. I just put it in today so have no idea if it will deter rodents but was disappointed with the weight when I compared it to the product used by the professional.

Looks good

If you are using for rodent control/gap filler there are other brands much more durable. This was easy to use and fold up but because it’s not high quality I had to use quite a bit folded many times to fill small holes. Also cutting it with regular scissors left little copper sheds all over. Not the best quality for my needs.

Product is what add described. Would recommend. Used in essential oil still.

Have found some craft uses in addition to keeping birds and mice entering ducts. It cuts easily with shears or sturdy scissors