They sell undercarriage paint in a spray can, but you won't fine rhinoliner or line-x or herculiner in a spray can. You need to apply the bedliners with some thickness, otherwise they won't work. That is why you have to roll on Herculiner.
You can get it in a wide range of colors. It took the better part of a day to prep, roll two coats, and re-install seats and harware. I used the package of 1 gallon and 3 quarts (4x8 truck bed kit). It was about $130 with shipping and about $30 for other supplies (MEK, tape, paper, scotch pads, 4" roller, 2" brushes for corners and edges, beer). The people at Grizzly Grip are very helpful. Prep work is the key to a good final product.
I know this is a few days old, so you may have already found something, but DupliColor makes a spray on bedliner. I've never used it, so I can't comment on it. I would think, though, that it'd be better suited for touch-ups than as your only liner.
a buddy of mine used some sorta spraycan stuff in his TJ, it's already flaking off in some spots, but i dont think he prepped it good enough. also, a guy ina truck forum with me did his truck bed with herculiner, and after his first load of lumber he had some chiped spots, and he says he did extra prep work the herculiner says is necessary. i think i'm gettin mine sprayed with pendaliner at a local truck accessory shop here in town. i know money makes a big differece, and believe me, i aint got much money at all. but i'd rather it be done right the 1st time.
when i bedlined the inside of my tj. I used duplicolor bedliner from discount auto parts. Duplicolor also sell a bedliner spray can. go to duplicolors website and it tells u were duplicolor paints are sold.
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