I was having that same issue as I do supervised free ranging and need them to coop up on my schedule. The chicken chase was getting very old,especially with my road runner bantam. Then someone suggested I try dried meal worms. Shake it and they come running. I was skeptical it would be that easy but desperate. After I ordered them on amazon I found them at Lowes Home Improvement for $6. my plan was to ONLY give them when they got in the coop. Day 2 a group of my friends tots came to see the chickens and somehow the meal worm bucket got in their hands and half was gone before I knew it. So much for it being special. I put them away for 4 days hoping they would be craving them and sure enough, after 2 days it worked. Shake the container and stand by the open run door and call chickie chickie. They do come running. Of course I may have one that gets nervous and circles the coop (they're still young) but when they see the others eating the "delicious" meal worms it doesn't take long to get them in. I think the key is to make this a special treat that they ONLY get when they go in the coop or run. Gosh I hope it keeps working!!