Many plastics are impregnated with salt. They'd be illegal in a no-bait river. Same with scented plastics like Berkley Power Worms. I had a Gamie check me in no-bait water last weekend.......he took a whiff of the platics we were fishing to see if they were obviously scented.

You can buy plastics with salt, scents, pheremones, etc. added to them to increase their effectiveness. All these types are illegal to use in no-bait water.
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She was standin' alone over by the juke box, like she'd something to sell.
I said "baby, what's the goin' price?" She told me to go to hell.

Bon Scott - Shot Down in Flames