I Like to pre-measure my livewell additve at home and pour the powder into little zip lock bags that Wal-Greens sell in there medicine isle. The bag is about 2" by 2" with a zip lock closure. I just take a capful of the additive and pour it in the baggy. This way all I need to do is grab a baggy, open it up, and dump it in the contents into the livewell. This way I don't waste alot by pouring from the container and eye-balling the amount. The little baggies are perfect, strong and convienent, plus alot cheaper than livewell additive.