Read the care label fully first. A normal wash should work, but if the bird has been eating berries, it may be necessary to use careful hydrogen peroxide bleaching (1 part 20% volume hydrogen peroxide to 6 parts cold water) for white and colourfast fabrics (other than nylon).
Persil Biological Persil Bio – Persil’s ‘ no need to pre-treat ’ bio formulation – available in powder and Gel Tablet formats – tackles the toughest stains first time round, making pre-treating and re-washing on hundreds of every