The ash inside the navel can be picked. If there is too much ash inside the navel, there is a risk of secondary bacterial infection over time, leading to inflammation of the navel. So the belly button inside the ash to often be cleaned, but the cleaning is best in the bath time, or in the belly button ash is completely soaked in iodine softened before you can pick. Generally use cotton swabs or use something soft to take out the belly button inside the ash, not to use hard cotton swabs or finger nails to pick directly. The process of picking may lead to damage to the skin inside the navel, and if the damage is not disinfected, it may lead to infection of the navel.