BioSafe · Bacillus Thuringiensis · EPA Reg 89046-12-70299 · Insecticide
Document last checked 2026-05-30
According to the label From the product label
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BT NOW is a water-soluble formulation used for agricultural pest control. Its active ingredient is Bacillus thuringiensis subsp. kurstaki (BTK), which consists of fermentation products, spores, and insecticidal toxins. This product is designed to control various lepidopteran pests, including various species of caterpillars, armyworms, corn earworms, and various moths, across a wide range of crops including fruits, vegetables, grains, and ornamentals. It is applied via spray or irrigation systems. When used through irrigation, it should be applied as a suspension in water. Users should note that the product is effective against larvae; timing is critical to apply when larvae are small. Handling requires specific Personal Protective Equipment (PPE), including chemical-resistant gloves, long-sleeved shirts, long pants, and protective eyewear. If using a closed system, handlers must be provided with appropriate PPE. In case of skin contact, rinse immediately with plenty of water for 15-20 minutes. The label notes that the product should not be applied to areas where water is present or to interditch areas below the mean high-water mark.
Pests covered (5)
ArmywormsAlfalfa Caterpillar, European Skipper, Loopers, WebwormsCorn Earworm, Cotton Bollworm, Tomato Fruitworm, Tobacco BudwormDiamondback Moth, Green CloverwormArmyworms, Caterpillars, Loopers
Areas treatable (4)
Forage, Fodder, Straw and Hay CropsCrop Group 18 Nongrass Animal Feeds, including: AlfalfaCrop Groups 3 and 3-07 Bulb VegetablesCrop Groups 5 and 5-16 Brassica (Cole) Leafy Vegetables
How to treat each type of area 4
Forage, Fodder, Straw and Hay Crops
| Target pest |
Location |
Rate |
Unit |
| Armyworms |
Outdoor |
1.00 |
pint/acre |
Crop Group 18 Nongrass Animal Feeds, including: Alfalfa
| Target pest |
Location |
Rate |
Unit |
| Alfalfa Caterpillar, European Skipper, Loopers, Webworms |
Outdoor |
1.00-2.00 |
pint/acre |
Crop Groups 3 and 3-07 Bulb Vegetables
| Target pest |
Location |
Rate |
Unit |
| Corn Earworm, Cotton Bollworm, Tomato Fruitworm, Tobacco Budworm |
Outdoor |
2.00-3.50 |
pint/acre |
Crop Groups 5 and 5-16 Brassica (Cole) Leafy Vegetables
| Target pest |
Location |
Rate |
Unit |
| Diamondback Moth, Green Cloverworm |
Outdoor |
0.50-2.00 |
pint/acre |
Mixing instructions 1
| For pests |
Location |
Label notes |
| General agricultural pests |
Outdoor |
Can be applied undiluted or diluted with water. For irrigation, use 100 gallons of water per volume of turf. |
Worker safety
Re-entry interval (REI)
48
PPE required
Chemical-resistant gloves, long-sleeved shirt and long pants, water-resistant shoes, and protective eyewear. If using a closed system, handlers must be provided with all appropriate PPE.
Timing & weather
- Apply when wind conditions allow good spray coverage.
- Apply when significant rainfall is imminent (do not apply if rain is expected within 48 hours).
Use restrictions 2
- Do not apply to areas where water is present or to interditch areas below the mean high-water mark.
- Do not store spray mixture in spray equipment for more than 18 hours.