About remelting Powerbait and Yum baits...I've been remelting aLOT of Yum F2 baits here lately. Some have been collecting for some time, others I found marked way down that I bought just for remelting. Yum's are loaded with salt so the 1st melt is only to melt and set aside to let most of the salt sink, then I cut the salt bar off the bottom, cut up the rest for remelting into baits. You lose some flake this way but flake can be added again. I've remelted a bunch of this plastic...some straight, some mixed with others...into some FINE baits. Junebug, Virgo Blue, Black and Blue, to name a few...all Yum F2 remelts into 2" Gliders. Then they're cured for a few days, scented as I bag 'em.
Now, the Berkley Powerbait...I bought 200 Power Worms, 2 colors...Green Pumpkin and Tequila Sunrise. These baits are not salted and remelt just fine, but a man must prepare himself for what he is about to inflict on his sense of smell before he embarks on this endeavor. Powerbait is loaded with some kind of finely-ground substance that my nose perceives as "perishable", surely an organic creature that once lived, but the species is a mystery. Probably the best advice I can give to anyone remelting Powerbait is to add about 25% (or a little more) of plastic that's not salted and not Powerbait, to give the baits a little more durability because the Powerbait substance makes the baits weak, and I assure You, the fish will smell, very much so, a bait that has been made from Powerbait but "cut" with a little "clean" plastic.
Bro...with Yum, Zoom, Berkley Powerbait, any oil-based plastic bait...remelt it up. It does just fine. I am, however, using a pot and electric burner, not a cup and microwave (I highly recommend this method!).
Now, any store-bought baits that come in a water-based liquid are made from a water-based plastisol...and 1, DO NOT MIX with standard oil-based plastic...and 2, so far I don't know how to get the water-based baits to re-solidify! They melt and stay gooey.
...dotdotdot...