There are lots of different kinds of this non slip "stuff". If one type doesn't work, try another one. Some seem more "sticky" than others. It even comes in colors. I have a bright yellow one. I love this so much I bought a really huge piece from Amazon. It is under throw rugs, small pieces in the kitchen for under cutting boards, opening jars, under cloth table covers and under my foot pedals. I'm probably forgetting other areas that I use it for.
Kathie