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| Possible Source: |
What to Do: |
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| Decorative Pond |
Stock with mosquito fish (ask Mosquito District) or use Bacillus thuringiensis israelensis (Bti) larvicides (i.e. Mosquito Dunksâ). Inquire at your local hardware store or nursery. Thin out aquatic vegetation. |
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Swimming Pool/Spa |
Operate filter and skimmer every day to remove egg rafts and larva. Provide drainage for filter and pump sumps. Remember chlorine will NOT kill mosquito larva. Stock disused or "out-of-order pools with mosquito fish (ask Mosquito District). | |
| Pool/spa covers | Keep tight. Remove water from top of cover weekly. | |
| Wading pool | Change water weekly. Store indoors when not in use | |
| Bird bath | Change water weekly | |
| Tree Hole | Check frequently for water. Consult tree specialist to see if hole may be safely filled with sand or mortar. Place Bti larvicides in hole. | |
| Rain Gutters | Clean frequently to remove leaf litter and keep water flowing. | |
| Containers
(i.e. jars, unused flower pots, buckets, wheelbarrows, etc.) |
Dispose of, turn upside down or store indoors. | |
| Septic Tank | Seal and cover openings so adult mosquitoes cannot enter. Contact County Environmental Health Department for advice. | |
| Under house or basement | Check for water, especially after rain. Drain if necessary. | |
| Livestock watering trough | Stock large troughs with mosquito fish. Clean small ones weekly. | |
| Catch basins/storm drains/street gutter | Check for standing water. Contact Mosquito Control. | |
| Boats | Keep tightly covered. Remove drain plug. Check and drain cover weekly if necessary. | |
| In-ground utility boxes | Check for standing water. Pump out if necessary. | |
| Tires | Remove or drill holes so water will drain. | |
| Rain barrels | Screen top with fine wire mesh. Change water weekly. Treat with Bti. | |
| Water gardens | Stock with mosquito fish or use Bti larvicides. | |
| Leaky pipes & faucets | Repair. | |
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