Choose the application method according to the type of pest and environment, and master the correct spraying time and operation skills.
The core of the effect of insecticide spraying lies in the precise matching of pest habits, environmental conditions and agent characteristics. The following are key operation points:
1. Spraying time and environmental control
**The best application period
Home environment: After spraying, doors and windows need to be closed, and the airtight state should be maintained for more than 30 minutes, and the fumigation effect should be used to improve the killing effect.
Agricultural application: Choose 9-10 am or after 4 pm, when pests are active and the liquid volatilizes less, avoiding high temperature and reducing the efficacy of the drug.
2. Targeted application method
**Choose the method according to the activity pattern of pests
Contact-killing agents (such as cypermethrin): spray evenly on the habitats of pests (such as the back of leaves and corners of walls). Systemic agents (such as imidacloprid): absorbed and transmitted by plants, they have significant effects on piercing-sucking mouthparts pests (aphids and planthoppers).
Fumigation-type agents (such as aerosols): spray upward at an angle of 45° to cover the flying insect activity area above the space.
**Specific scene operation
Kill cockroaches: spray directly on the insect body or its hiding place (such as gaps, kitchen corners).
Underground pests (grubs, etc.): use poisoned soil or seed treatment instead of foliar spraying.
3. Agent selection and safety matters
**Recommendations for hot and rainy weather
Use fast-acting (such as leaf insect net) or systemic agents (such as triadimefon) to reduce the impact of rain erosion.
Microbial insecticides (such as Beauveria bassiana) are more active when humidity is high.
4. Safety regulations
Avoid spraying with open flames (such as next to mosquito coils) to prevent the risk of explosion.
Families should give priority to alcohol-based aerosols to reduce residual pollution.
5. Pest resistance management
Alternate the use of pesticides with different mechanisms of action (such as rotating thiamethoxam and dinotefuran) to delay pest resistance.
Combine physical control (screens, traps) to reduce dependence on chemical agents.
