It's impossible to farm karvodailnirols anywhere near the quantities required for a GX's daily use. It's not an understatement that GXes need EDP for everything. Mobbing, mvping, WoE, etc. I go through a hundred of those things a day, twice of that when in high level areas.
Right now, the only real source of poison bottles is the vending machine and WPS. I've literally never seen someone try to mass-produce them as the fail rate is high and karvos are very rare. Besides, EDP only lasts about a minute and a half with poison research at max. GX is essentially out of luck when nobody is selling poison bottles.
That's why I propose that karvos be removed from CDP formula, or replaced with something that could conceivably be gathered in large amounts, such as genetic's bomb, seed, and potion materials.