I've never used for my snakes but this should work: I use it to get the pool chlorine out of my swimsuits & hair, & it works great...especially the "protective fish
coating" and despite the fact that it says "for aquarium use only". Sold in Petco.
Brand- Instant Ocean Marine Conditioner: "makes tap water safe; protective fish coating, eliminates chlorine, chloramine & heavy metals; no-foam formula."
The 8.45 fl. oz. (250 ml) bottle costs about $10..."treats 500 gallons" using 5 ml. per every 10 gallons of water.
So... the chlorine in the water is safe for snakes? Geez if that is the case I have been doing way to much work. LOL.