John and I bought these silicone cutting mats a while back. They seemed like a great idea. They're flexible, easy to clean, and non-porous. They help avoid cross contamination and are stored easily. Perfect, right?
We treated these mats with reasonable care and we washed them by hand as we don't have a dishwasher. This is what we got. Immediately.
The color on the back of the mats easily rubbed off leaving hard to remove marks on our counters.
Avoid these mats, folks. Stick to time-tested wooden cutting boards. We currently have bamboo boards and they certainly do the trick.