Regular maintenance is an effective way to remove stains and keep your pool enclosure’s aluminum rods and sheet clean and presentable. However, some tough stains might not come off as easily, and ignoring them will only lead to your enclosure degrading. If you have stubborn stains, you can use a 50/50 mix of water and vinegar to scrub out problem spots with a soft sponge or cloth. After you finish scrubbing, follow up your efforts by thoroughly rinsing your pool enclosure with your garden hose. The easiest way to ensure your enclosure stays clean is to remove stains and spots as soon as possible before they have time to settle in and become more challenging to wash.