Summer brings warm weather, outdoor adventures – and relentless swarms of gnats. These tiny pests can turn a relaxing day outside into an itchy, frustrating experience.

• But with so many options available – from natural sprays and gnat repellent to long-lasting chemical formulas – how do you choose the best one?

We’ve tested and compared the top gnat repellents on the market, evaluating their effectiveness, safety, and ease of use. Below, we break down the five best gnat repellents for Summer 2025, including their pros and cons.

7 Best Gnat Repellents for Summer 2025

1. Bug Soother Gnat, Mosquito Repellent

Bug Soother is a top choice for those who prefer plant-based protection. Made with citronella, lemongrass, and vanilla essential oils, it repels gnats without harsh chemicals. The light, pleasant scent makes it great for everyday use, and it absorbs quickly without leaving a greasy residue.

However, natural repellents typically require more frequent reapplication—especially in humid or bug-heavy areas. While perfect for casual outings, those in high-gnat zones might need something stronger.

Pros:

• 100% natural ingredients
• Safe for kids and pets
• Non-greasy, fast-absorbing
• Pleasant citrus-vanilla scent

Cons:

• Lasts only 1-2 hours
• Not sweat/water-resistant

Best for: Light outdoor activities, families, and eco-conscious users.

2. Sawyer Products 20 Percent Premium Gnat Repellent 

If you need all-day defense, Sawyer’s 20% Picaridin formula is a top performer. It repels gnats, mosquitoes, and ticks for up to 14 hours—making it ideal for camping, hiking, or tropical trips. Unlike DEET, it’s odorless and won’t damage clothing or gear.

The downside? It’s a synthetic formula, so those with very sensitive skin should test it first. But for serious outdoor enthusiasts, it’s one of the most reliable options available.

Pros:

• 14-hour protection
• Odorless and non-greasy
• Safe for most fabrics
• Also repels ticks & mosquitoes

Cons:

• Not 100% natural
• May irritate sensitive skin

Best for: Backpacking, fishing, and bug-heavy areas.

3. No Natz Gnat (Botanical & DEET-Free) Repellant

No Natz offers a gentle, plant-based formula with peppermint and geranium oils. It’s safe for kids, pets, and sensitive skin, and the light herbal scent is far more pleasant than chemical sprays.

The trade-off? It’s not as long-lasting as synthetic repellents, requiring reapplication every 2-3 hours. Still, it’s a great choice for short trips and eco-friendly users.

Pros:

• 100% natural ingredients
• Safe for kids & pets
• Travel-friendly size

Cons:

• Short 2-3 hour effectiveness
• Not water-resistant

Best for: Casual outings, travel, and sensitive skin.

4. Babyganics Natural Insect Repellent for Gnats

Designed for babies’ delicate skin, Babyganics uses citronella and rosemary oil for gentle yet effective protection. It’s pediatrician-approved, free of synthetic fragrances, and doubles as a light moisturizer.

The oil-based formula isn’t water-resistant, so it needs reapplying after swimming or sweating. The spray nozzle can also clog occasionally.

Pros:

• Safe for babies & kids
• Moisturizes skin
• No harsh chemicals

Cons:

• Slightly greasy feel
• Nozzle clogs sometimes

Best for: Parents with young children.

5. Avon SKIN-SO-SOFT Bug Guard PLUS Gnat Repellent

This unique SPF 30 + bug repellent combo is perfect for beach days or outdoor events. It moisturizes with vitamin E and aloe vera while keeping gnats away.

However, combined formulas are less potent than standalone products. It’s not water-resistant, so reapplication is needed after swimming.

Pros:

• Sun protection + bug repellent – mosquito repellents
• Light, pleasant scent
• Moisturizing formula

Cons:

• Weaker than dedicated sprays
• Not water-resistant

Best for: Light outdoor activities where sun & bug protection are needed.

6. Repel Lemon Eucalyptus – Heavy-Duty Repellent

For those who want strong natural protection, Repel’s Lemon Eucalyptus spray offers up to 6 hours of defense. It’s CDC-recommended and contains oil of lemon eucalyptus, one of the few plant-based ingredients proven to rival DEET in effectiveness.

The strong citrus scent may be overpowering for some, and it’s not recommended for children under 3 years old. But for adults who want powerful natural protection, it’s a top contender.

Pros:

• CDC-approved plant-based formula
• Up to 6 hours of protection
• No synthetic chemicals

Cons:

• Strong lemon scent
• Not for young children
• Can feel slightly oily

Best for: Adults who want maximum natural protection.

7. Thermacell Radius Zone – Best Area Repellent

For hands-free protection, the Thermacell Radius Zone creates a 20-foot bug-free zone using metofluthrin, a synthetic repellent. It’s perfect for patios, campsites, or any stationary outdoor activity.

While highly effective, it’s not portable (requires a flat surface) and isn’t ideal for moving around. The refills also add to long-term costs.

Pros:

• Creates 20-foot protection zone
• No sprays or skin contact needed
• Works in 15 minutes

Cons:

• Not portable
• Requires refills
• Contains synthetic chemicals

Best for: Backyard gatherings, camping, and patio use.

Conclusion 

The best gnat repellent depends on your needs:

• For natural protection: Bug Soother (best scent, safe for kids)
• For long-lasting defense: Sawyer Picaridin (14-hour protection)
• For sensitive skin: No Natz (gentle, plant-based)
• For families: Babyganics (pediatrician-approved)
• For sun + bug protection: Avon Skin So Soft (2-in-1 convenience)

No matter which you choose, the right repellent will help you enjoy a bite-free summer—without the constant swatting. Stock up before your next adventure and reclaim your outdoor space from pesky gnats!