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EPA registration data for Reg. 10163-169 →
Imidan 70-W is an organophosphate insecticide formulated as water-soluble bags. Its active ingredient is Phosmet (70.0%). It is used to control a variety of pests including various worms, beetles, and aphids in agricultural settings such as almonds, apples, apricots, blueberries, cranberries, and more. The product is designed for both indoor and outdoor use, primarily through foliar applications, ground applications, and dormant sprays. Because it is an organophosphate, it is highly toxic; if swallowed, inhaled, or absorbed through the skin, it may be fatal. In case of exposure, contact a poison control center or doctor immediately. Handling requires specific Personal Protective Equipment (PPE), including long-sleeved shirts, long pants, chemical-resistant gloves, and sometimes a respirator depending on the application method. Users must follow strict mixing and application instructions to prevent drift and environmental contamination, particularly near water sources. Always check specific crop rates and preharvest intervals (PHI) as they vary significantly by target pest and crop type.
Pests covered (3)
Peach Twig BorerApple Maggot, Codling Moth, etc.Orangeworm, Leaffooted plant bugs
Areas treatable (3)
AlmondsApplesAlmonds (California only)
How to treat each type of area 3
Almonds
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Peach Twig Borer |
Outdoor |
4 1/3 |
lb/acre |
Limit use to one application per season. |
Apples
heavy insect infestations
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Apple Maggot, Codling Moth, etc. |
Outdoor |
2 1/8 - 5 3/4 |
lb/acre |
Use higher dosage rates for heavy infestations. |
Almonds (California only)
| Target pest |
Location |
Rate |
Unit |
| Orangeworm, Leaffooted plant bugs |
Outdoor |
4 1/3 |
lb/acre |
Mixing instructions 1
| Label notes |
| Mix in water tank only. Keep WSP(s) in a manner that protects against breakage and unintended release. Do not add other products or complete the tank until bags have fully dissolved. |
Worker safety
Re-entry interval (REI)
3 days (Almonds/Peaches), 7 days (Apples), 14 days (Apricots/Cranberries/Blueberries)
PPE required
Long-sleeved shirt and long pants, shoes plus socks, chemical-resistant gloves, chemical-resistant footwear, and a NIOSH-approved respirator if required by application method.
Timing & weather
- Avoid applying when wind speed is 3-10 mph for ground applications.
- Avoid applying during high humidity and high temperatures to prevent increased drift.
- Do not apply during dormant season for certain crops.
Use restrictions 5
- Do not use in residential, park, or recreational areas.
- Do not apply to forests or natural areas.
- Do not apply to nursery or Christmas tree farms.
- Do not apply by air or chemigation.
- Do not apply when bees are in the area.
Active ingredient
Sulfur
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