These were perfect to put over a busy driveway where cords are laying across to keep a livestock tank heated for the winter. Through mud, snow and dry weather they move very little and provide great support. I_ very pleased with the product. They do have that industrial rubber smell, so if using indoors I suggest you let them air out a few days before using them.
I use them for stop indicators in the garage. After a couple of weeks they don't offgas so much and I can't smell it unless I need to reposition one. But when new? Whew-eee they really, really stink.
Alexis H 
