I have seen on fishing shows where they throw dry dog food in the water where they are
going to fish about 8 hours before the are going to fish.

Jimmy Houston used hog pellets.

I have had people tell me they use cheap cand of dog food and
punch holes in the cans and throw them in the water.
I wouldn't do this because you could get a fine for littering.

I think I will try it.

I hope this helps.
Good Luck.