I was thinking the same thing. It is such a waste to throw those bottles out. Also the cost to sanitize, clean & refill them is still lower than buying a new bottle.
You can buy a high end 5 gallon jug of
solution for usually $250 or under.
That's 640 ounces or about .39 cents per ounce. So 4 ounces will cost you about $1.50- $1.55, instead of the $3-$4 that Mystic charges.
This also gives you more choices for your clients. Who wants to be limited to just the mystic sauce?