To preserve wyvern milk for long time you need 3 items 1.. preservebin 2..spark power 3.raw salt(tub looking saltπŸ˜…)

Remember it if you use only spark power it will increase the time approx 8 hours but if you add spark power and SALT TUB it will increase even more like 24 hours around soo don't forget it and there is no better method beside this

More Wyvern Taming & KO Tips