Product review (5 stars): Best Solution
While the gap between my countertop and stove is very narrow, the countertop overhangs the cabinet so I was able to slide the Crumb Stop into that space. That will make a marked improvement over spills going any further down.

Installation is very easy: squeeze one end, insert it into the gap, and push the Crumb Stop back. It slides out just as easily for rinsing.

I can imagine that a Crumb Stop might be just as useful in preventing the spread of horizontal spills, such as along the base of a fridge.

I much prefer this design compared to a bridging strip.