Rugs with silicone backing

Q: I’ve heard to only use certain materials (ideally 100% natural rubber) for rugs, mats on hardwood, or it may discolor the stain. I’m looking for a mat to place under dog bowls, and most are silicone. Will this affect the color of the floor? I’m also searching for padded kitchen mats, most of which are not rubber. Are these safe?

Can you recommend materials that will not affect the stain?

A: I’m not an expert on floor mats but I would avoid the silicone backing. I would go online to LL Bean. They have some good mats.