We do not prorate partial months. Your monthly rental entitles you to the use of your rented MI-BOX container for all or any part of the monthly rental period as stated in your rental agreement. However, we will work with you to schedule your service to take the best advantage of your billing cycle. Your rent is charged on the monthly anniversary of the initial delivery date (or the last day of the month if the corresponding date does not exist in the subsequent month), so you must notify us that your container is empty and ready for pickup before the anniversary date in order to avoid being charged on the anniversary date. Please see Terms & Conditions for additional details.