Black spots

[carasgidia]

Black spots have appeared on my windowsill, furniture and now bedlinen! They can be wiped clean, but what is causing this?

[B00]

Dampness.

[Robinia]

how big are the spots? do you mean pinhead size? if so it's probably spider poo - sorry if you don't like spiders......

[MORELLO]

Mold.

[tatie]

Small black spots could be fly droppings

[Gemma Babe]

This sounds like mould caused by dampness. Try putting a dish of salt in your window bottom or buy some absorbing crystals (wilcos I think). They do work better.Try to air the room well by opening a window.

[carasgidia]

Thanks for your answers!
I've just moved into a bungalow, and there were several spiders, craneflies and beetles (still trying to get rid of them!), so that must be it as there isn't any dampness or mould.

Yuk - I hate spiders!

[hybridlab]

If they simply wipe away and are not solid then its likely the condensation is causing mould. De humidifier will also help