Regarding a solution itself if you choose to use one - Not an advertisement - but a recommendation based on our experience. Check out IceClear PGX by Orison. Our company went with them as a bio-based alternative to using petroleum based glycol solutions. It is a complex carbohydrate solution. http://www.orisonmarketing.com/deicers/PGX/pgx.html TML M.S., MT(ASCP)