I think I have found a solution.
Update: we are going to purchase one of these:
https://www.amazon.com/OEMTOOLS-2480.../dp/B01GSKA1CM
And use this aqueous parts cleaning solution:
https://chemfree.com/portfolio-items...rtfolioCats=47
Total cost will be budget friendly under $250, and if properly maintained, should last indefinately, with no MSDS, fire, OSHA, or AQMD concerns.
Thank you to everyone who helped!