A clean screen door makes a bigger difference than you'd think. Here's the most effective method, plus the mistakes most people make.
Use the vacuum's brush attachment to vacuum both sides of the screen and remove loose dust and debris.
Mix Multi-Surface Cleaner with warm water in a bucket.
Dip a soft brush in the soapy water and gently scrub both sides of the screen. Work in small sections.
Rinse the screen with the garden hose. Use gentle pressure to avoid damaging the mesh.
Wipe the frame with a damp microfiber cloth. Dry to prevent water spots.