Things You'll Need:
- Garden hose
- Castile soap
- Water
- Spray bottle
- Phytoseiulus persimilis mite
- Isopropyl alcohol
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Step 1
Inspect and quarantine any infested plants that are on the patio by removing them, if feasible. Avoid placing them near other plants in your yard to avoid spreading the infestation.
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Step 2
Hose the porch down well with cold water. Mites do not mind the damp, but cold water will both drown them and create a hostile environment. Repeat this daily for one week.
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Step 3
Spray the patio down with a homemade insecticidal soap after you apply the cold shower. It is chemical-free and will turn any survivors to mush. Use three drops of Castile soap per quart of water. Spray the affected area daily after applying the cold water treatment.
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Step 4
Introduce a predator if they are also in your foliage. The Phytoseiulus persimilis is a mite that feeds not only on spider mites, but its own species. Within a few weeks it will have eaten the spider mites and cannibalized itself.
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Step 5
Mix 50 percent isopropyl alcohol and water in a spray bottle to use for spot annihilation of the pests on the patio. Keep it nearby when you're outside. Spray the area every 20 minutes as needed.
