The use of the queen excluder
When you decide to lay the honeycombs, you must proceed carefully to prevent the queen from leaving the nest and climbing into the honeycomb. The queen excluder comes to our aid, which is a metal or plastic grid that allows the workers to pass, but not the queen, who thus remains confined in the nest and excluded from the honeycomb. The queen excluder must of course be placed on top of the nest, on which the honeycomb, honeycomb cover and roof will then be placed. This operation is necessary to prevent the honeycomb, intended for honey production, from being filled with brood. This eventuality, in fact, would cause a 'contamination' of the honey, which would be darker and with a more bitter taste, classically known as 'honeycomb honey'. The use of the queen excluder is very widespread among those who use Dadant-Blatt hives, while it is much less present among those who prefer Langstroth hives. The use of queen excluders has advantages and disadvantages.