How to mix chlorophos for bedbugs? - briefly
Dissolve the specified quantity of chlorophos granules (e.g., 1 g per liter of warm water) and stir until fully dispersed before applying with a sprayer to infested zones. Let the solution stand for about 10 minutes to complete dissolution, then use as directed.
How to mix chlorophos for bedbugs? - in detail
Chlorophos, a liquid insecticide containing chlorpyrifos, must be prepared according to precise measurements to achieve effective control of Cimex lectularius. Follow these steps:
- Wear nitrile gloves, protective eyewear, and a disposable coverall. Ensure adequate ventilation or work outdoors.
- Determine the target concentration. For bed‑bug infestations, a solution of 0.5 % active ingredient (approximately 5 ml of chlorophos per litre of water) is recommended.
- Measure the required volume of chlorophos with a calibrated syringe or graduated cylinder. For example, to treat 10 l of water, add 50 ml of the concentrate.
- Fill a clean, food‑grade bucket with the calculated amount of water. Use warm (not hot) tap water to improve solubility.
- Slowly pour the measured chlorophos into the water while stirring continuously. Use a long‑handled stir stick or a low‑speed drill with a mixing paddle to achieve uniform distribution.
- Continue mixing for at least 2 minutes to prevent stratification. Verify homogeneity by checking a small sample with a dip‑stick; the liquid should appear consistent throughout.
- Transfer the solution to a pump‑sprayer equipped with a fine‑mist nozzle. Adjust the nozzle to a 20‑30 psi pressure setting to produce a fine aerosol that can penetrate cracks and crevices.
- Apply the spray directly onto infested areas: mattress seams, box‑spring edges, headboards, bed frames, and baseboard junctions. Ensure thorough coverage, especially in hidden voids.
- Allow the treated surfaces to remain wet for at least 30 minutes before vacuuming or laundering. This dwell time maximizes insecticidal action.
- After completion, rinse all equipment with water, then with a detergent solution. Dispose of rinse water according to local hazardous‑waste regulations.
- Store any remaining chlorophos in its original, tightly sealed container, away from direct sunlight and heat sources. Label the container with the preparation date and concentration.
Safety reminders: Do not exceed the recommended 0.5 % concentration; higher levels increase toxicity without improving efficacy. Keep the mixture out of reach of children and pets. In the event of skin contact, wash immediately with soap and water; for ocular exposure, flush with clean water for 15 minutes and seek medical assistance.