I considered using a milk jug but didn't like the size as you risk unnecessary spillage while trying to pour the feed into the 3" pipe. My scooper is virtually spill free and one handed. I do like the idea of using the milk jug as a funnel though. You could scoop the feed with the jug then pour...
I've been looking for a good mess resistant scooper to fill my 3" pipe feeder. I didn't have much luck finding one that allowed me to ad any quantity at one time.
So I cut a short length of leftover 3" pipe, removed a U shaped section from one end then used a heat gun to mold it to fit into the...
Just made one myself. Changed it up a little by cutting a half moon shape out of a cap where they feed from to reduce mess. Plus I used a 45 to bring the fill cap outside the coop for easy refill.