Corry's Moss B Ware is EPA registered (#10699-1) with 99% zinc sulfate monohydrate active ingredient, providing maximum strength professional-grade moss elimination. Unlike generic products, it's specifically formulated for long-lasting results with proven effectiveness on roofs, patios, and walkways. The EPA registration ensures safety, efficacy, and regulatory compliance that generic products cannot match.

Yes, when used according to EPA label directions. Corry's Moss B Ware is EPA registered for safe residential use. However, you must wear protective equipment (gloves, goggles, dust mask), avoid copper gutters/downspouts, and prevent contact with plants. The EPA registration process ensures the product meets strict safety standards when used properly.

Visible moss elimination typically begins within days of application. The 99% zinc sulfate active ingredient works quickly to kill existing moss and prevent regrowth. Complete elimination may take 1-2 weeks depending on moss severity and weather conditions. The professional-strength formula ensures faster, more complete results than weaker alternatives.

Yes, Corry's Moss B Ware is safe for asphalt shingles, composition roofing, metal roofing (non-copper), tile, slate, and most roofing materials. It works on both pitched and flat roofs. The only restriction is copper gutters or downspouts, which may be corroded by the zinc sulfate. Always check the EPA label for specific material compatibility.

For pitched roofs, use 3 lbs per 600 sq ft applied directly along the ridge. For flat roofs, mix 1 lb in 3 gallons of water for spray application. For prevention, use 1 lb per 1,000 sq ft. A typical single-story home (1,200-1,500 sq ft) needs 6-9 lbs for complete treatment. Our bundles provide cost-effective coverage for most residential applications.

Zinc sulfate can harm plants if direct contact occurs. The EPA label requires avoiding contact with shrubs, flowers, and lawns, and rinsing immediately if contact occurs. When applied properly to roofs and hardscapes, and with proper precautions to prevent runoff, the risk to landscaping is minimal. Use tarps or plastic sheeting to protect sensitive plants during application.

Corry's Moss B Ware provides long-lasting protection that can prevent moss regrowth for extended periods, typically 1-3 years depending on environmental conditions. The zinc sulfate creates an inhospitable environment for moss growth. Reapplication may be needed in areas with heavy moisture, shade, or severe moss problems. Prevention treatments (1 lb per 1,000 sq ft) can extend protection even longer.

Homeowners can apply Corry's Moss B Ware following EPA label directions, but roof work involves safety risks. For ground-level applications (patios, walkways), DIY application is straightforward with proper safety equipment. For roof applications, consider professional application due to height dangers and the need for proper safety equipment. Professional applicators also ensure optimal coverage and EPA compliance.

We offer both local Damascus delivery and standard shipping options. Local delivery provides personalized service and technical support, while standard shipping serves customers throughout the region. Local delivery typically takes 2-4 days and includes consultation services. Standard shipping provides convenient access to professional-grade moss control for customers outside our local delivery area.

Corry's Moss B Ware is EPA registered, meaning it has undergone extensive environmental safety testing. While zinc sulfate is toxic to fish and aquatic invertebrates, proper application prevents environmental contamination. The EPA registration process ensures the product can be used safely when label directions are followed, including preventing runoff to water sources and using appropriate application rates.

Our experienced team provides comprehensive technical support including application rate calculations, surface compatibility guidance, safety equipment recommendations, and EPA compliance assistance. We can help determine the right quantity for your project, recommend application methods, and connect you with qualified local applicators when needed. Call (503) 496-7017 for expert consultation and project planning support.