I keep feed and water in my raised coop. Water is a 2 gallon galvanized fount on a homemade heated base. Feed is in a 12# galvanized hanging feeder.
Both are kept in coop 24/7. I lock up the coop at night, so I've not had a pest problem in 10 months. I also keep water under the coop during the day and a shallow galvanized pan in my uncovered run during hot weather, so the girls can splish splash. I also keep oyster shell in the coop and granite grit under the coop in separate containers
GC