I clean my pigeon loft with a vacuum cleaner while the pigeons stay inside. The pigeons are not afraid because they are used to the noise. I move calmly and slowly so they remain relaxed. First, I vacuum the floor and remove dust, feathers, and dry droppings. Then I clean the corners, under the perches, and the nest boxes. With the vacuum cleaner, I can work very thoroughly without stirring up much dust. The pigeons stay calm and sit quietly in their places. After vacuuming, I air out the loft w