Yes, the opening is quite small and diapers will have to be folded or squeezed to get them in the hole. The reason is to minimize the air flow of the open pail. The pail does come with a few bags, so you will have to purchase more bags very soon. The baking soda for this model comes in the bags already. It is in the plastic so there is no need for it to come as a powder in the pail. A baking soda disk must be replaced periodically. This is one of the best diaper pails to neutralize odors.