Do you need help with checking of Mezuzot? We are happy to offer assistance and guidance related to all aspects of Mezuzot. Mezuzot should be checked twice every seven years to see if they have been affected by adverse weather conditions, or by folding (which can cause cracks in the letters), or if any other defect has occurred. It is preferable to check Mezuzot which are on the outside of a building more often, due to their vulnerability to the elements. Customer is responsible for shipping costs.