Highly recommended, so much that I am writing a new review to replace an original review that seems to have disappeared (different vendor?) Used this product a couple of years ago to fill about 90 irregularly-sized brick weep holes that were allowing mouse infiltration & have found it very effective. The product stays in place once installed, but is not particularly noticeable even with my very light-colored brick. I generally cut a 4" strip into 4 narrow strips that I pushed into the holes with a heavy screwdriver, but it was easy to make smaller or larger as needed. I was a little sad to eliminate an apparent overwintering location for some praying mantis. I bought a kit that included gloves & snips - great protective gloves but, after the first few clips with the snips, I had much better luck with a long-bladed scissor. Bought some additional rolls without the accessories to complete the project & know there will be a day I will be glad to have a little extra product on hand for a need that hasn't yet revealed itself. Neighbors were quoted prices - from reputable firms - that were literally in the thousands of dollars to attack mouse problems when there was an overwhelming rodent population increase both indoors and outdoors in our community. Still have an occasional mouse, but have solved the principal problem.