A few random questions . . . I can only find Di-Methox in the gallon 12.5% solution . . . is this what you buy for treating coccidia? Once opened, how long can that gallon last? I see that Jeffers also carried a powder . . . has anyone here figured the conversion for how to mix the solution up into smaller amounts (rather than a whole gallon)? I also saw an injectable Di-Methox 40% (which is backordered there, I think) - has anyone used that for treating coccidia? I'm just looking for the easiest, most cost-effective way to use Di-Methox without it losing its potency.