Product review (5 stars): Great product, great idea!  They do not melt!
This is a fantastic idea and a fantastic product.  This came in a pack of 2, we picked the color black because our stove and refrigerator are black.  The color matches perfectly.  The magnets are very strong, they do not become separated or fall.

No more crumbs in the little crack between our appliances and the counter, which is great because it's very hard to clean them up from that small area.  These are about 1" too short for the length of our counter, so we positioned them level with the front and left the 1" gap in the back - which works out o.k., because you usually don't spill things on the back 1" of your counter.

Some other reviews have said that they melt from the heat of the stove, but we disagree.  The one we have by the stove does get warm when we use the burners on the stove that are next to it - but I just checked it and it is not melted at all and the magnet power is still just as strong.

Highly recommended!