I ordered this product for my new Eufy 30c as Eufy brand boundary markers are much more expensive. These boundary markers work well. The only thing I think is that there should be more double sided tape in the package and I would advise you to fold the strips you cut out in reverse order and leave them in that position for a while so that they are folded when sticking stick to the floor, they won't come off. t left at the ends. It even happens to me with double sided tape at the very ends. But again, the product works great to keep my Eufy robot vacuum from getting into areas I don't want.