The big problem is not the congration of the animals, the fact the leave saliva on the bait its self and then other animals come up and eat it with in close time proximity of each other. Normal deer food, are small browse and nuts and fruit, the deer consume the whole thing not leaving any of it behind. and what saliva they do leave behind is usually in effective because of the time that allapses before the next deer eats off it. I have used bait to get pictures on trail cameras, and they do congregate, i have some pics with over 10 deer on the pile of sweetfeed. and more walking down to partake. They push their way in and eat food in the same spot another deer was up to his/her ears into. The spread of saliva is the big problem from everything i have read.