How do you remove an AZO (Bladder Medicine) stain from carpet?

To remove an AZO stain from carpet, first, blot up as much of the stain as possible using a clean cloth. Then, mix a solution of dishwashing liquid and water and apply it to the stained area. Blot the stain with the solution and rinse with water. If the stain persists, you can try using a carpet stain remover or a mixture of vinegar and water. Always test any cleaning solution on a small, inconspicuous area of the carpet first to ensure it does not cause damage.