I invested in Invisigrip and put is on all my rulers. After a short time it became frosy appearing and then began falling off the rulers and not sticking. I pulled it off and threw it away. I do no like the sand paper dots nor the clear dots because then the ruler is not sitting right on the fabric and I don't feel accuracy in cutting is achieved. the spray baste idea seems messy and sticky to me, although I may give it a try. I read this post with interest, hoping there was something I have not tried. I liked the invisigrip when it was new, but it gets old pretty quickly. Has anyone else had this problem?