I opted for a 6′ x 4′ wooden hen coop which can house up 12 chickens comfortably.
The frequency with regards to cleaning the coop out depends on the time of year and the number of hens you keep. During the winter months with the shorter periods of daylight, the hens will spend more time indoors and the amount of droppings in the coop will increase. Whereas in the summer months the hens will spend much more time outdoors and the coop will stay relatively clean.
I carry out a mega clean twice a year and disinfect the whole coop using a product called ‘Poultry Shield’, specifically designed to use in coops.