The white shouldered house moth is one of the most common species of moth in Britain and belongs to the same subspecies as the brown house moth. Part of the reason that it is so widespread in comparison to other species of moths is that it is not at all fussy about what it eats.
Some moths will seek out specific food or materials and won’t settle for anything else. The white shouldered house moth is not like this; they will eat just about anything they can get their mouths on. Moths have a well-deserved reputation for devouring fabrics and wreaking havoc with household materials, but many of them are just as partial to more conventional foods as well. The white shouldered house moth is a perfect example of this.
As an omnivorous moth, these guys will eat just about anything. Depending on the type of property they inhabit, the diet of a white shouldered house moth can consist of bran, flour, cereals, wool, and animal-based fabrics. Like many species of moths, they have a particular fondness for birds nests, which are loaded with keratin and provide the perfect environment to raise their young. If you want to keep white moths, including white shouldered moths, out of your home, it’s a good idea to clear away any birds nests as you find them.
Because of their omnivorous diet, white shouldered house moths have considered food pests and present a risk to stored food. The moths are relatively harmless, but they can lay hundreds of eggs in or close to important food sources. It’s therefore essential that you keep an eye out for them in your home.