Who wouldn't want them back! LOL!!! I know, I know, the nutrition the hogs get steals the nutrition for the racks! I use a few different methods of keeping them at the feeder. Feeder additives and not just corn, creosole rope or twine around a tree soaked in Black Gold or similar for rubbing posts, drippers with sow in heat or big PVC drippers with Pig Out or similar and post holes filled with layers of corn and additive as deep asI can dig them. Put that setup near water and heavy cover and they have a tough time leaving for any significant period of time.