Wet & Forget
Wet & Forget Outdoor Cleaner review
A no-scrub 5L biocide-based outdoor cleaner that works passively—spray once and let rain do the work over weeks for effortless patio, fence, and deck maintenance. Its gentle formula earns 4.5 stars from over 5,000 UK reviews, particularly praised for being kind to wood surfaces whilst effectively tackling green slime and algae. Ideal for spring gardeners who prefer minimal intervention and low-maintenance cleaning solutions.
Key features
- 5L bottle size
- Biocide-based formula
- Spray-on application—rain-activated
- Works passively over weeks
- Suitable for patios, fences, and decks
- Gentle on wood surfaces
- 4.5-star rating from 5,000+ UK reviews
Pros
- True no-scrub, hands-off application
- Safe and gentle on wood decking
- Effective against patios, fences, and decks
- Highly rated (4.5 stars from 5,000+ reviews)
- Rain-activated design works with UK weather patterns
Cons
- Slower results than fast-acting formulas (weeks rather than days)
- Requires consistent rainfall for optimal activation
- Slightly more expensive at £20 per bottle
Who is it for
Busy UK homeowners who want effective outdoor cleaning without scrubbing, pressure washers, or repeated applications. Perfect for those with mixed garden surfaces (wood, composite, stone) who value convenience and gentle results. Best for spring garden refreshes where patience meets practicality.