The Crushed Charcoal from The Bird House range by Happy Pet is excellent in helping to aid digestion for birds. The Crushed Charcoal can be mixed with bird seeds or scattered in small amounts on the bottom of the cage. It is recommended that the Crushed Charcoal is given to your birds up to 3 times a week only. The Crushed Charcoal is also said to help fight hyperacidity and will help to absorb any toxins.