Please understand... These INDUSTRIAL pads are brand new rubber. manufactured only months before we ship them. Industrial strength rubber has a smell that lingers for a while. the smell goes away after a few weeks. To speed up this process, simply was them in soap & water. You cannot hurt these pads with any cleaning agent. Super Duty All Rubber Anti-Vibration Pads These pads are the waffle type. Pads are designed for all purpose indoor and outdoor use.