sorry I had 3 tablespoons per pint, it's 3 tablespoons per drinker (two and a half pints) that is , sorry about that, that is what i use once per week, sorted it on my post, but as I say I am only a fancier with my ideas, I am a vinegar fanatic, use it for stings etc, u know those bites u get and ar itchy put some viegar on them, also great for household cleaning, but always remember if someone tells u about something to give ur birds and u think its wrong then do not give,