I got it - car door trim! It works perfectly on the lip of the white hood part. Hopefully that helps, it sure does take the sharp edge off the plastic.
OMG!! That's why my chickens have missing feathers!! I've been trying to figure it out for a couple months, I thought maybe it was the stress of integration but now I wonder if it's the feeder.
I have the same feeder (and love it) & my chickens are all missing feathers in the same place as...