Product review (4 stars): High quality, work great! Don't dry wipe well though.
Where have these been all my life!!  We just got a new glass stove top/oven combo and when we pulled out the old one I was horrified by all the food/grease and stains that were along the stove and the counter walls :(  It took me hours to clean the walls.  I knew we dropped little food bits and tried to vacuum/clean in the little gaps but it was much worse than I expected.  These gap covers have worked great!  They Install super quick and are barely noticeable. We have a black range and green counters and used the black gap covers.  They do slid a little bit but only when I am cleaning the stove top.  They were a little bit long but only on the counter top, so  we trimmed them to the counter top depth.  My only negative is that since they are a silicone material, they don't wipe down very easily and tend to collect stuff (bread crumbs, salt/spices).  You can't dry wipe stuff off and so  we just take a general purpose cleaner and wipe it down each night.  I would recommend to anyone who has a space/gap between the stove and counters.