DSR-49 Mold and Mildew Killer Concentrate
- Trusted by Pros and DIYers Nationwide
$25.47 - $164.47
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Product Information
DSR-49 penetrates deep into wood surfaces to kill mold and mildew, and restores a natural look to grayed and weathered decks and fences.
Product Details
Penetrate deep into wood surfaces to kill mold and mildew and restore a natural look to grayed and weathered decks and fences. Ideal for wood preparation before water sealer application. Sold as a powder, so you can make it strong enough for any job. Sprinkle on to a wet surface and brush or roll on .One 4 pound pail can make 10 gallons of solution
Mixing: Mix 6.5 ounces per gallon of warm water. A blue color will appear. Continue to stir, as product is mixed, color will fade and solution will increase in viscosity. When all color is gone, mixture is ready to use. This mixture should be used within 6 hours.
Shipping & Delivery
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Fast nationwide shipping via UPS
Most orders arrive within 5–10 business days. -
Direct-from-manufacturer items may take up to 14 business days
If a product will take longer than expected, a PowerWash.com account executive will contact you. -
Backorder notifications
If an item becomes unavailable or delayed, our team will notify you immediately with options. -
Freight delivery for large equipment
Oversized items ship by truck freight. Lift-gate service is available if needed. -
Alaska & Hawaii shipping
Delivery to AK/HI may take up to 30 business days. (Some chemical products cannot ship to AK/HI.) -
International shipping available
We ship to most countries worldwide. Call 1-800-433-2113 for rates. -
Order minimum
Orders under $15 may incur a minimum order fee. -
Track your order anytime
You can check your order status using the Orders & Returns page.
Returns & Warranty
30-Day Return Window (Unused Items)
Unused products in original packaging can be returned within 30 days of delivery.
Simple Return Process
Just contact our team to receive an RMA (Return Authorization) before sending anything back.
Restocking Fee
Returns may be subject to a 20% restocking fee.
Non-Returnable Items
Due to safety and usage factors, the following items cannot be returned:
– Pressure washers (covered under warranty only)
– Chemicals / hazmat products
– Custom or special-order equipment
Manufacturer Warranties Apply
Many products are backed by manufacturer warranties (pumps, engines, accessories, etc.).
Coverage varies by brand and product type.
Defective or Damaged Items
If something arrives damaged or defective, contact us immediately so we can make it right.
Support
Support & Questions
Talk to a real pressure washing expert
Our team helps contractors choose the right equipment, chemicals, and setup.
Need help before ordering?
We can help you confirm:
– Proper sizing (GPM, PSI, fittings)
– Product compatibility
– Best setup for your job
Support after purchase
We’re here to help with setup, usage, and troubleshooting.
Call or speak with our team
 1-800-433-2113
Fast response from experienced staff
No call centers — you’ll speak with someone who understands the equipment.
Get It Right The First Time
No guesswork. No wrong orders.
- Fast Shipping
- Contractor Support
- Financing Available
Reviews
Frequently Asked Questions
Yes! DSR-49 Wood Prep & Mold Killer restores the natural color of sun damaged or grayed wood by removing embedded organic material and brightening the surface.
Yes! DSR-49 Wood Prep & Mold Killer is ideal for prepping wood before sealing. It opens the wood grain and removes contaminants, helping your water sealer or stain bond more effectively.
DSR-49 Wood Prep & Mold Killer is specifically designed to penetrate deep into wood surfaces to kill mold, mildew, and algae. It restores a natural, clean look to weathered wood, making it perfect for deck and fence restoration.
