Cleaning hard-to-reach dirt

In a spray bottle, mix 1 part fabric softener and 4 parts water and spritz a firm short-bristle paintbrush with the mixture. Work the brush into the dirty area, wiping it clean. The paintbrush will reach narrow gaps, while the lubricant will help to pick up the loose particles, instead of just pushing them around, and will leave behind an antistatic residue that prevents dust and debris from settling in the future.