ZeroTol HC

BioSafe · Hydrogen Peroxide · EPA Reg 70299-16 · Insecticide Document last checked 2026-05-30

According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 70299-16 →

ZeroTol HC is a fungicide/bactericide used to control various plant pathogens, including fungi, bacteria, algae, and mold. It is formulated with 5.34% Hydrogen Peroxide and 1.36% Peroxyacetic Acid. This product is designed for use on various plant surfaces, including leaves, stems, shrubs, and trees, as well as turf and hydroponic systems. It can be applied via spot treatment, foam application, foliar spray, or as a preventative treatment. For turf, it can be used to control algae and fungi. For hydroponic systems, it helps prevent root rot caused by water-borne and water-transmitted pathogens. Note that this product is NOT approved for use in California for certain applications. When handling, be aware that the product is corrosive and can cause irreversible eye damage. It may also cause skin irritation. Always use appropriate personal protective equipment and follow mixing and application instructions carefully. Do not apply if rain is expected within 24 hours unless the product is intended to be washed into a drainage system. Always read the full label for specific site restrictions and safety precautions.

Pests covered (3)

fungi, bacteria, algae, mold, mildewalgae and fungiroot rot (water-borne/water-transmitted pathogens)

Areas treatable (3)

plant surfaces (leaves, stems, shrubs, trees)turfhydroponic and aquaponic systems

Application instructions from the label 3

plant surfaces (leaves, stems, shrubs, trees)

Spot treatment, foam, or foliar spray

Target pest: fungi, bacteria, algae, mold, mildew
Location: Outdoor
Dilution: Refer to mixing instructions

turf

Use on well-established lawns

Target pest: algae and fungi
Location: Outdoor
Dilution: Refer to mixing instructions

hydroponic and aquaponic systems

Not approved for use in California

Target pest: root rot (water-borne/water-transmitted pathogens)
Location: Indoor
Dilution: 1-2 oz per 50 gallons

Mixing instructions 6

For pests	Amount	Per	Label notes
spot treatment			Apply directly over the infested area
foam application			Use a foaming agent like BioSafe BioBreaker
foliar treatment			Apply to plant surfaces
non-hose end sprayer (initial application)	1.150 to 0.85 fl. oz.	per gallon of water	Do not reuse or refill container
non-hose end sprayer (weekly preventative)	1.200 or 0.64 fl. oz.	per gallon of clean water
hydroponic/aquaponic	1-2	oz per 50 gallons	Add to water solution

Worker safety

PPE required Avoid contact with eyes and skin. Use appropriate protection to prevent eye damage and skin irritation.

Timing & weather

Do not apply if rain is expected within 24 hours
Apply in the early morning or late afternoon

Use restrictions 4

Not approved for use in California for certain applications (hydroponic/aquaponic and turf/landscapes)
Do not use in concentrated form
Do not mix with other pesticides, cleaners, or oxidative agents
Do not apply if rain is expected within 24 hours (unless intended to wash into drainage)

Label SDS

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Document text and citations

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Reference only. Always read and follow the most current EPA-approved label on the product container. State and local restrictions may apply that are not reflected in this digitised copy. Verify the EPA registration number and revision date before use.