10 Best Cleaner For Trex Deck 2025 in the United States

The Oxy Solve House and Siding Pressure Washer Cleaner is a liquid concentrate designed to clean various types of outdoor siding, including vinyl, aluminum, wood, brick, and stucco. It effectively removes stains caused by mold, mildew, algae, and moss, making it suitable for keeping Trex decks and similar surfaces looking fresh. The main cleaning power comes from peroxide, which breaks down grime without using harsh chemicals, resulting in a safer and more environmentally friendly option.

The Simple Green 13005CT is a concentrated industrial cleaner and degreaser that works well on various surfaces, including those similar to TREX deck material. Its strength lies in removing tough dirt, grease, and stains, which can be helpful if your deck has heavy grime or stubborn spots. Since it’s a concentrated liquid, you can dilute it to match the cleaning task, making it cost-effective and versatile. The application is flexible—you can use it by hand or with cleaning machines like pressure washers or scrubbers, which might be useful for larger decks.

Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Concentrate is a liquid cleaner designed for outdoor surfaces including decks, concrete, siding, and roofs. It’s ideal for Trex decks since it doesn’t require scrubbing, rinsing, or pressure washing, making it gentle on composite materials. You mix it with water and spray on a dry surface, then simply wait for rain and wind to naturally wash away moss, algae, and mildew stains. The big plus is its ease of use—no hard work or special equipment needed—and it can keep surfaces clean for up to a year.