The promoter comes in these little sponges that tend to fall apart as you use on the bedliner so just take your time. Also i would wear a glove when applying it. It dries pretty quick and isn't too messy.
Hi there, I did not scuff up my spray in....too scared haha....i order extra adhesive promoter just to be safe. Once installed i put heavy items on the adhesive points just to ensure bonding. So far no issues at all!