Chemical Bat Zone (Patreon)

This isn't how GRO is made. Or is it. I do not know.

Enormously endowed machines roam around, drinking chemicals to process them into even more potent cocktails. They balloon up until the refinery is complete and ejaculate the final product into plain canisters that are shipped to wanting customers.

Some of them end up following the container trains back to the factory, where they are employed themselves, getting factory farm fresh doses for as long as they please. 

Most of them are set on autopilot during working hours after their wetware is modified for the job. Some of them become more machine than flesh themselves.