Chickens spreading feed all over

[Rodrad]

My Chickes have started spreading their food all over. This didn’t start until I switched them to the layer feed. I have tried the crumble and the pellets and they do it with both. The issue is when it rains the ground gets wet and it all dissolves away. I am going through about a 40 pound bag of feed a week for 8 chickens because of it. Anyone have any ideas. The only thing I can think of is the feeder is too low. You can’t tell but the feed on the ground is pretty thick. The feeder holds about 20 pounds of food and I filled it a day or two ago. It is almost empty.
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I just finished a bucket style feeder. It is quite proofed against spilling food:
https://www.backyardchickens.com/ar...-spill-food-final-design-with-pictures.76568/