might be fly poop. If it's a WOOD window frame, with small holes visible in the wood surface and the "black sand shaped particles" are piled up in small areas, then you should consider checking for termites. Termite trailings are usually visible as small piles of particles resembling the size and texture of course beach sand. The color of the trailings will vary depending on the age and type of wood involved. Termites in pine wood will have lighter colored trailings due to pine's lighter shade; in contrast, the termite trailings from a darker wood like walnut or mahogany will be much darker than the pine trailings. Different User Answer As a pest control professional and a termite inspector for the last 4 years I can honestly say that I have never seen termites leave any kind of particles. Termites generally leave only damaged wood and mud behind. They use the mud to build a shelter in which they travel through that keeps them protected from outside elements and helps keep moisture in their bodies. The standard subterranean termite does not leave any black particles that look like sand. Without seeing it it would be hard to say exactly what you have
debris from trees, rain. ect!
You are the black window.
They are little black colored Pokemon that have on eye and are usually shaped like letters
It means u need to bury it
look for source of lingering humidity. its your bathroom well ventilated, does it have a window, do you leave window open no mosquito screen?
above the reg plate and where you open the boot there is a little black button press and the window will open
*The black WIDOW spider is, not the black window. that doesn't exist! LOL
there's a little black button just above the number plate
Its located driver side dash. Open the driver door and pull little panel. When looking at the fuses its the top right relay (little black square).
if your shining a good black-light up there and seeing little glowing things, it could be soap residue left over from you last shower or paper particles you breathed in normally.
Soot (particles of carbon)
It is the little black cube shaped part wit a little stem that rests against the brake pedal.