What 'THEY' don't know won't hurt them.
I tend to 'feed the ducks' lots of bread and sinking particles while Carp fishing, I even like to wrap 3 slices of bread with corn sandwiched in the middle of all slices around my 3oz lead so it explodes on impact with the water, that way the ducks swarm my bait.
Oh, and remember, I only condoned feeding the ducks.
Anyone on this forum will tell you not to do it, but I can sure as hell tell you I wouldn't pour the juice on the bank. If you fish with no chum for Carp in an area you can't see them, chances are you will only catch 0-2. Chumming is illegal because people would no doubt take it too far and throw random crap in the water which could either kill the fish or rot and drive the fish out, if I throw anything ''to the ducks'' its gonna be cleaned up by the next morning, Trout, Suckers, Squaws, and Carp like (and benefit from) the baits I and a lot of Carp fishers use.