Hi, welcome to BYC!
Sounds like you might have too many candy bars available.
Scraps, corn, and meal worms are like crack cocaine to a chicken! Why would they eat their salad, so to speak? I would cut them out until your birds are consuming their formulated ration that is meant to meet their nutritional needs. They know you are bringing goodies they will hold out.
My birds do NOT like pellets at all. They prefer crumbles. Raising your feeder so it as the same height as their back can help to reduce waste. Also, don't fill it to the top. It's amazing how good they can get at beaking everything out onto the ground!
Changing feeds might be an option for you. If this feed is new to your birds, they can be resistant to change since they are creatures of habit. You can also try wetting it which would turn it into a mash. Not runny though. This decreases some waste and some birds really like it.
Scraps, corn, and meal worms or other treats should be limited to NO more than 10% of their total daily intake. Corn is low in protein and meal worms are high in fat. While scraps are likely going to be low in nutrients and micro nutrients. Be SURE not to diminish your protein below 16%.
Since I feed crumble... and usually ferment, I can toss out a handful of pellets and the birds think they are getting a treat when in fact they are getting full nutrition.
Hi, welcome to BYC!
Sounds like you might have too many candy bars available.
Scraps, corn, and meal worms are like crack cocaine to a chicken! Why would they eat their salad, so to speak? I would cut them out until your birds are consuming their formulated ration that is meant to meet their nutritional needs. They know you are bringing goodies they will hold out.
My birds do NOT like pellets at all. They prefer crumbles. Raising your feeder so it as the same height as their back can help to reduce waste. Also, don't fill it to the top. It's amazing how good they can get at beaking everything out onto the ground!
Changing feeds might be an option for you. If this feed is new to your birds, they can be resistant to change since they are creatures of habit. You can also try wetting it which would turn it into a mash. Not runny though. This decreases some waste and some birds really like it.
Scraps, corn, and meal worms or other treats should be limited to NO more than 10% of their total daily intake. Corn is low in protein and meal worms are high in fat. While scraps are likely going to be low in nutrients and micro nutrients. Be SURE not to diminish your protein below 16%.
Since I feed crumble... and usually ferment, I can toss out a handful of pellets and the birds think they are getting a treat when in fact they are getting full nutrition.
If you normally have them just available... change it so they are just associated with you and maybe at a certain time of day. I take treats out around 5 pm (right now, varies with the season). But that way, everybody gets some instead of girls who might be in the lay box missing out. 
The girls know the routine. Any other time of day I can walk out without being flocked to and practically mauled. But come treat time they come running from far across the pasture when they see me! 
So yes you can either just add water or you can add water and ferment. Either way and see what happens. A good ratio is 1 part water to 1 part feed and probably have to let it sit for 1/2 hour or maybe a little longer (over night is OK) to absorb the water and swell up all the way. I would only do a day or 2 worth at a time at most and see how your birds feel about it. Doing too much can still end you up with waste. Definitely wanna avoid the mess of feed everywhere, because it attracts rodents who are vectors of internal and external parasites as well as disease. I put up all my feeders at night and still have visitors looking for shrapnel, but I'm not supporting an entire exploding population. 
