Moths are harmful insects. Tineola bisselliella or common clothes moths voraciously attack textile fibres. More specifically, it is their larvae that bore holes in your clothes, carpets, curtains, etc. These larvae feed on the textile fibres and also use them to form a cocoon.
The flour moth, ephestia kuehniella, bears a close resemblance to the clothes moth. As an adult it is about 8 mm long and has yellowish wings. The larvae are about 10 mm long and feed on different kinds of food. They have a fondness for flour, but do not hesitate to attack cereals, pasta, rice, etc. These moths are therefore a real threat to your food stocks.
If you have flour or clothes moths, you should deal with them as soon as possible. Otherwise, you risk having bigger problems: an aggravated moth infestation.