A clean window screens makes a bigger difference than you'd think. Here's the most effective method, plus the mistakes most people make.
Carefully pop out each screen and lay them flat on a clean surface outside.
Use a garden hose on a gentle setting to rinse both sides of each screen, removing loose dust and debris.
Mix Vibes Multi-Surface Cleaner with warm water. Gently scrub both sides of each screen with a soft brush.
Rinse thoroughly with the hose and prop screens up to air dry completely before reinstalling.