Sounds like one of those classic “why didn’t I know this sooner?” tricks.
Let me guess what your nana showed you—this is the most common version of that 2-minute blinds hack:
You take a clean sock (or microfiber cloth), dip it in a mix of warm water + a splash of vinegar or dish soap, then slip it over your hand. After that, you just run your hand along each slat of the blinds, pinching from both sides so you clean top and bottom at once.
Some people upgrade it by wrapping the cloth around kitchen tongs, so you can clamp and swipe multiple slats even faster.
Why it works so well:
- The sock traps dust instead of pushing it around
- The vinegar cuts through grime without heavy scrubbing
- You clean both sides in one pass, so it really does feel like “no work”
If you want, tell me your exact version—nanas usually have slightly different twists (some are surprisingly clever, like using dryer sheets or old pillowcases).