Mix increasing amounts of your pet's new food with decreasing amounts of the old food over a 7 day period. (petco.com)
One method for getting your dog used to a new formula is to mix increasing amounts of the new food with decreasing amounts of the old food over a 7 day period. (thebarkbuzz.com)
Over time, offer smaller and smaller amounts of the old food along with the new food. (pets.webmd.com)