I prefer to buy this in concentrate, but its hard to find. We have found it useful and less toxic than other options.
https://smile.amazon.com/Manna-Pro-...1637979091&sprefix=poultry+pr,aps,350&sr=8-3#
https://smile.amazon.com/Manna-Pro-...1637979091&sprefix=poultry+pr,aps,350&sr=8-3#