Yeah, clean the bed well and get rid of any rust you intend to cover.I've been thinking about doing this for my truck. I'd like to keep the price under $150. There's a ton of them on the market, but I can't tell if any of them are worth a damn. All i want is that it's a DIY job, and i have the ability to to buy it in red to match the pain on my truck.
Get Rhino Lining brand. I've heard about them long time ago and if they're still around then their product is good.