Advice
What Are Booklice and Why Do They Appear?
Booklice are tiny, pale insects that feed on mould, and their appearance almost always points to a damp or humid problem somewhere in the property.
Read the guide →The insects feed on mould you often cannot see, which means they point to damp somewhere nearby. A good visit looks at the building as well as the bugs. We explain what we find in plain language, treat where it is needed, and show you how to dry things out.
Booklice in the Sid valley
Sidford sits just north of Sidmouth, with homes along the River Sid valley. The mix of older and newer properties matters here. Older houses can have damp walls and cold corners, while newer ones sometimes have rooms that stay humid because they are tightly sealed and poorly ventilated, especially in the first months after building work, a new extension or redecorating. Neither is a fault.
Valley locations can also mean more moisture in the air at certain times of year. None of that is a fault of the householder. It simply means a cupboard, a spare room or a pile of boxes in a corner can quietly become the right place for mould to grow, and then for booklice to move in and multiply. It can happen in any tidy household without anyone noticing.
Where we look and what we advise
We check the places booklice usually gather: bookshelves, wardrobes, window frames, kitchen cupboards, bags of flour or cereal, and anything stored in cardboard. We look for mould, condensation and signs of a leak. In Sidford homes we often find the cause is as simple as a bathroom without an extractor or a wardrobe pushed hard against a cold wall. Each of these places tells us something different about how the damp is getting in.
Where treatment helps, we apply it only to the areas where the insects are living. Stored food that is infested should be thrown away, and mouldy items cleaned or removed. We then talk through ventilation and dehumidifying so the room stays dry. We will not suggest work you do not need, and we will say so honestly if little is required. That keeps the visit useful and the advice proportionate.
Stopping them coming back
Once the insects are gone, the aim is to keep conditions dry enough that mould does not return. Leave a little space behind furniture, keep stored paper in plastic boxes with lids, and air rooms regularly. If you live in Sidford and want a second opinion, we also cover Sidmouth and Ottery St Mary, and can talk through your situation with you.
Frequently asked questions
What do booklice look like, and how do I tell them from other insects?
They are tiny, soft bodied and pale, usually under two millimetres, and they move quickly on paper, shelves and windowsills. They do not have the hard shell of a beetle. If you are unsure what you have found, we can confirm it for you.
Why have booklice appeared in my newer Sidford home?
Newer homes can hold moisture from building materials and plaster as they dry out, and a sealed, unventilated room encourages mould. Booklice feed on that mould, so they often appear in the first year or two after building or redecorating.
Do I need to throw away my books?
Only if they are mouldy or heavily infested. Lightly affected books can be wiped, dried and stored somewhere drier. Food that has been infested should go in the bin, and when we visit we will say which items are worth saving.