So far in 3 months they have not let me down. The tape doesn't seem to work, but it works. My experience with tape like this is that it needs to be installed in a warm environment. If it is very cold outside, wait until the temperature exceeds 40 degrees. The adhesive backing is difficult to remove, but it's ok with this type of tape. Insert the grill insert and press firmly for about 30 seconds. They look great and hide unsightly metal parts behind the bars.