Deltamethrin
Deltamethrin is an external insecticide and acaricide used in formulation-specific sprays, dips and other parasite-control products.
Group
Pyrethroid ectoparasiticide
Mechanism of Action
Prolongs opening of arthropod voltage-gated sodium channels, disrupting nerve conduction.
Dose Rates
Cattle
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Buffaloes
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Sheep
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Goats
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Camels
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Horses
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Dogs
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. | |
| Deltamethrin collar parasite control | Reference only | TOPICAL | Do not use in: Puppies under 12 weeks for the described collar; The described Scalibor 4% collar is replaced every 6 months; maximum effect may take 2–3 weeks. The cited collar instructions exclude puppies younger than 12 weeks. Do not transfer these limits to spray products. |
Pigs
| Use / stage | Dose | Route | Schedule | Instructions |
|---|---|---|---|---|
| External parasite control | Reference only | TOPICAL | Butox 12.5 mg/mL concentrate: dilute per litre of water at 2 mL for ticks/flies, 4 mL for mites or 1 mL for lice; apply as spray or dip. See Monitoring and Administration for topping-up and retreatment instructions. |
Indications
- Control of ticks, lice, mites and flies on appropriate host species
Contraindications
- Cats for the concentrated livestock/dog products described here
- Sick animals or animals with severe skin injury for Butox dipping
Interactions
- Avoid simultaneous exposure to other neurotoxic insecticides unless compatibility is established.
Adverse effects
- Skin irritation
- Salivation
- Tremor or seizures after toxic exposure
Toxicity
Pyrethroid poisoning produces hyperexcitability and tremors. Remove exposure, decontaminate skin and provide temperature control and anticonvulsant care.
Preparations
| Preparation | Form | Strength | Route |
|---|---|---|---|
| Butox Vet 1.25% concentrate Samruddh Pharmachem Pvt. Ltd. Dilute for spray/dip; never administer as an injection. Protect from light. Product withdrawal: meat 20 days, milk 0 days. | Other | 12.5 mg / mL | TOPICAL |
| Delta-25 solution 2.5% Selmore Pharmaceuticals Livestock: 1.5 mL/L of water for dip wash or 2 mL/L for spray. Premises: 2 mL/L. Prepare immediately before use; store 15–25°C. Not interchangeable with Butox dilution rates. | Other | 25 mg / mL | TOPICAL |
Monitoring and Administration
Use only externally; do not apply the concentrate undiluted. Prevent contamination of watercourses and fish habitat.
Butox 12.5 mg/mL: initial spray/dip mixture per litre of water is 2 mL for ticks or flies, 4 mL for mites and 1 mL for lice. Topping-up amounts are 3, 6 and 1.5 mL/L respectively. Mites: two treatments 8 days apart; ticks: initial two treatments 15 days apart, then according to reinfestation.
For adult livestock, thoroughly wet with at least 3–5 L of prepared spray. Prepare the emulsion by premixing in a small volume of water and then making up the required mixture. Avoid treatment in the heat, and do not dip thirsty animals.
Butox product withdrawal: meat 20 days, milk 0 days. These values do not apply to every deltamethrin formulation.
Collars can repel sandfly vectors of leishmaniasis in addition to flea/tick control in the relevant territory. Collar age limits and duration differ by exact presentation; keep them separate from livestock spray/dip instructions.