Chicken Coop Disinfectant Recipe - orange peels steeped in vinegar for a month, then put in a spray bottle. Making your own instead of buying will be much less expensive. It's sprayed inside the coop when cleaning it to discourage mites, fleas, bugs, etc.
Using wood ashes for your chickens saves money. (fireplace ash only, not BBQ coals, etc) and when needed, mix 2 parts ash to 1 part sand for the chickens to do their dust bathing. It keeps mites away. That and paint the coop with hydrated lime.
plymouth rock - These are standard-sized chickens known for living a long time. They're gentle creatures who do very well with people and get along with other pets, and they lay four or five pinkish brown eggs per week.