Lemongrass Oil for Pest Control

⚖️ Educational use only. Always read and follow the full product label — the label is the law under FIFRA. Full disclaimer → | ⚗️ Mixing Calculator →

Target Pests

Mosquitoes (moderate repellent, comparable to citronella), flies (moderate), gnats, ants (mild trail disruption), fleas (mild contact activity). Some evidence of activity against stored product pests. Generally less effective than geraniol or oil of lemon eucalyptus but more effective than most essential oils.

Products and Brand Names

Many natural pest products contain lemongrass as one of several active oils: EcoSmart sprays, Wondercide, Aunt Fannies, Bug Soother, various candles and torches. Pure lemongrass essential oil for DIY applications. Often combined with citronella, geraniol, and cedar oil in multi-oil formulations.

Safety and Precautions

Generally safe. FDA GRAS as food flavoring. Can cause skin sensitization in some individuals with repeated contact. Dilute to 2-5% for skin application. Test on small area first.

Cats: Like most essential oils, use caution around cats. Lemongrass is considered moderately risky for cats - avoid direct application and use only in well-ventilated areas. Cats that ingest lemongrass oil may experience GI upset and liver stress.

Safe around dogs at normal use concentrations. Pleasant citrus scent that most people enjoy.

Pro Tips

Lemongrass vs citronella: These are often confused because both come from Cymbopogon grasses and smell similar. Citronella oil (C. nardus/winterianus) has more mosquito repellent research behind it, but lemongrass oil (C. citratus) contains higher levels of geraniol, which may actually be the most active repellent component in both.

Best DIY recipe: 15 drops lemongrass oil + 10 drops geraniol + 5 drops cedar oil + 1 tsp vegetable glycerin + 1 cup distilled water. Shake well, spray on skin and clothing. Provides approximately 1-2 hours of mosquito repellency. Reapply frequently.

Around the patio: Lemongrass plants (the actual plant, not the scent-named geranium) produce some natural repellent effect when leaves are crushed and rubbed on skin or placed on tables. More effective than passive citronella plants but still limited range.

🐛 Pests This Treats — Learn More

Click any pest to view its full identification guide, biology, and treatment options.

🐛 Ants → 🐛 Fleas → 🐛 Flies → 🐛 Gnats → 🐛 Mosquito → 🐛 Scales → 🐛 Ticks →

🌿 Environmental & Ecological Impact

🐝 Bees / PollinatorsLOW

🐟 Fish / Aquatic LifeLOW

🐦 BirdsLOW

🐕 Mammals / PetsLOW

🦐 Aquatic InvertebratesLOW

💡 Natural repellent. FIFRA 25(b) exempt. Very short duration — reapply frequently.

⏱️ Residual & Re-entry Timeline

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Apply

Follow label mixing and application rates

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Re-entry: Immediate

Keep people and pets out of treated area

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Effective period: 1–3 hours

Active residual — killing or repelling target pests

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Reapply

Re-treat when pest activity returns or residual expires

Example

0.5 oz

per gallon

⚗️ Mixing Calculator

Enter your sprayer size and target rate — get the exact amount to pour. Backpack, hand sprayer, hose-end, or skid unit.

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❓ Frequently Asked Questions

Q: Is lemongrass oil safe for pets?

Follow the product label. Keep pets out of treated areas until completely dried (2–4 hours for sprays). Once dry, treated surfaces pose minimal risk to dogs and cats.

Q: Can I use lemongrass oil indoors?

Check the specific product label — formulations vary. Baits and dusts often have indoor labeling; concentrates and granulars are typically outdoor.

Q: How long does lemongrass oil last after application?

Residual varies by formulation, surface type, weather, and UV exposure. Indoor applications last longer than outdoor. Check the product label for re-application intervals.

Q: What should I do if exposed?

Remove contaminated clothing, wash skin with soap and water. For eye contact, rinse 15–20 minutes. For ingestion or severe symptoms, call Poison Control (1-800-222-1222). Have the product label available.

📋 Safety Data Sheet (SDS)

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Lemongrass Oil for Pest Control — Safety Data Sheet

View the official SDS document for this product directly on the CDMS label database.

📄 View SDS on CDMS → 🏛 Search EPA Label Database →

Lemongrass Oil for Pest Control Safety Data Sheet page 1

📄 Lemongrass Oil for Pest Control — Safety Data Sheet · View the complete SDS document above or download below

📄 CDMS Label & SDS Database 📄 EPA Label Search

Did you know? In Southeast Asian cooking, lemongrass is a staple ingredient in soups, curries, and teas. The same compounds that repel mosquitoes (citral and geraniol) are what give lemongrass its distinctive bright, citrusy flavor and aroma.

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Reviewed by Derek GiordanoContent reviewed by a licensed pest management professional. Last reviewed: April 2026.