Yes those coke bottles work fine.We've used them since plastic bottles were invented.They didn't make bottles like that when I started raising chickens.The odd shaped Coke bottles won't work,they don't hang right.I use them for laying crumbles also.The vienna sausage cans are for starter grower,I have to pen raise everything here.They come out of the brooder when they are big enough to stay in the 2x4 dog wire pens.Crossed pullets are turned loose,there's only 1 1/2 Thai 1/2 Grey pullet left of the 100+ I turned loose.All my wife's laying type stags are gone,I'm not gonna waste money and feed on laying roosters or crossed pullets.