The Gulp product line is not made of plastic. I pour plastic as a side hobby and I know for sure that the plastisol will not absourb scents, It will stain the bait so dont try it your white will turn yellow and will bleed
I infuse my scents into the plastic and coat them with a light oil scent after I pour.
I spend most of my time developing a solid vibration from my bait and scent as a secondary enticer. This has not only doubled my catch this year but trippled my bass catch, just from improving and altering the design and texture of the avalible bait sold at all tackle shops.
I agree with fishfinder
too expensive and no vibration