Why shouldn’t you use a bee hotel with a non removable back wall?
Bee hotels are structures designed to provide shelter for solitary bees, which are important pollinators for many plant species. However, it is important to ensure that bee hotels are constructed in a way that is safe for the bees.

One reason why it is not recommended to use a bee hotel with a non-removable back wall is that it can make it difficult to clean and maintain the structure. Over time, bee hotels can become infested with pests or diseases that can harm the bees. If the back wall cannot be removed, it may be difficult or impossible to clean out the affected compartments or to replace any damaged nesting materials.

In addition, some bee species require access to the back of the nesting tunnels in order to complete their life cycle. For example, mason bees, which are commonly attracted to bee hotels, typically seal off the back of their nesting tunnels with mud or other materials. If the back of the nesting tunnel is inaccessible, the bees may not be able to complete their life cycle, which could be harmful to the bees and could reduce their population in the area.

Therefore, it is recommended to use bee hotels that have removable back walls, to make it easier to clean and maintain the structure, and to provide access for the bees to complete their life cycle.
what does life cycle mean
The life cycle of an organism refers to the series of changes that it undergoes from birth to death. In the case of bees, the life cycle typically involves several stages, including egg, larva, pupa, and adult. During the egg stage, the female bee lays an egg in a nesting tunnel, which hatches into a larva. The larva feeds on a supply of pollen and nectar that the female bee has provided, and eventually spins a cocoon around itself to enter the pupal stage. During the pupal stage, the bee undergoes metamorphosis, transforming from a larva into an adult bee. Once the bee has completed its development, it chews its way out of the cocoon and emerges as an adult bee, ready to begin the cycle anew. Does that help?