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I bought these for my work van. Got a little tired of the “fingers” as people passed. I’m not sure if they have been sitting for a while on a shelf but the sticky / tackiness isn’t all there. I periodically have to smooth down the corners.
These are pretty innocuous little stickers, there’s not much to them, but they do look official and may stop some criminals from breaking into your vehicle. I suggest placing them at the bottom corner of windows so that any would be thief is guaranteed to get a good look at them. For the price, I definitely think these are worth it.