I was so happy to receive the item I clean my vehicle off dried it and applied it on well started my route it come off Didn't not stay on I was so hurt just money lost I order 4 lost all of them....
The vehicle you are putting them on has probably an alloy metal that has a good bit of aluminum and metal composite. The signs seem like they are sticking, but will not grip well at all because the magnets will not stick to the aluminum composite. we use commercial grade magnets, so I don't think that it is the magnets. either that, or you place you are putting them has had body work done in that area.If you will call me, I can send you some U.S. Mail stickers that you can use at no cost (except shipping). Sorry you had the problem, but we have only had a handful of others that had this problem in over 20 years.