Introducing Karcher Wood Fence & Deck pressure wash concentrate: Specifically designed for use in pressure washers, this highly concentrated detergent effectively removes environmental dirt, grime, algae, mold, mildew, and even iron marks. Its concentrated formula makes up to 36 gallons of ready-to-use Heavy Duty Cleaner, perfect for tackling tough cleaning jobs. Fast-acting and built for pressure washers, it cleans and rinses without leaving any residue. This phosphate-free and powerful cleaning formula is suitable for wood, composite, and PVC surfaces, reviving and restoring weathered exteriors. Directions: Pour it into your pressure washer's onboard detergent tank or connect the siphon tube to the product container. Refer to your pressure washer owner's manual for specific instructions. Adjust the metering valve if available to achieve the desired strength. For optimal results, start spraying from the bottom up, allowing the detergent to penetrate surface dirt for 1-5 minutes. Avoid letting it dry. Rinse the surface at high pressure with clean water. For stubborn dirt, a soft bristle brush can be used. Remember to wash from the bottom up and rinse from the top down for the best outcome. If you prefer using a foam cannon, the Karcher Wood Fence & Deck cleaner can be easily applied by placing it in the foam cannon bottle. Adjust the foam cannon metering valve to your desired strength and follow a similar washing process as described above. For manual application, dilute the detergent by mixing 1 part with 35 parts water. Adjust the strength according to your needs. Apply the solution to the surface for 1-5 minutes, ensuring it doesn't dry. Rinse with high pressure from the top down. Notes: Always test on an inconspicuous area first. Before starting, saturate any surrounding vegetation with water. Once cleaning is complete, repeat saturating vegetation.