Why do window sills collect dust faster than any other surface in the house? I used to dust mine every Saturday and by Thursday they looked like a desert landscape. Then a cleaning trick I found by accident changed the whole game, and now I dust the sills about once a month.

Why dust loves the sill

Window sills are dust magnets for a simple reason: static electricity. Dry air moves over the glass and the frame, the plastic or painted wood builds up a charge, and dust particles get pulled out of the air like they owe it money. Wiping with a dry cloth just moves the charge around. The dust comes right back.

The two step fix

First, wash the sill with a damp microfiber cloth and a drop of dish soap in warm water. This actually removes the dust instead of pushing it. Dry it with a second cloth so no water sits on the paint.

Second, and this is the trick, wipe the clean sill with a dryer sheet. The fabric softener leaves a microscopic anti-static layer behind. Dust stops being attracted to the surface, so it stops piling up.

I tried this on my bedroom sill in spring, during full pollen season, and it stayed noticeably clean for almost three weeks. Before the dryer sheet, I was lucky to get five days.

Things to know

• Work the dryer sheet into the corners and along the inner edge where dust loves to gather.
• Reapply after you wash the sill. One wash, one sheet, done.
• If you do not use dryer sheets, a thin wipe of furniture polish or car wax does the same anti-static job.
• Do the top of the window frame too while you are up there. It collects the same way.

It costs nothing because you already have the sheets, it takes about two minutes per window, and it breaks the weekly dust cycle. That is the kind of cleaning win I will take.