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Top rated dog wormers
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Best overall value HartzHartz UltraGuard Pro Max Flea & Tick Dog Spot Treatment
Affordable spot treatment that repels and kills fleas, ticks, and mosquitoes for up to 30 days.
- Long-lasting protection
- Kills multiple pests
- Budget-friendly
- May cause skin irritation in sensitive dogs
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Best budget pick PetArmorPetArmor Plus Flea & Tick Prevention for Dogs
Triple action protection kills fleas, ticks, and lice; contains same active ingredients as Frontline Plus.
- Effective against fleas and ticks
- Waterproof
- Affordable
- Requires monthly application
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Best natural formula WondercideWondercide Flea & Tick Spray for Dogs
Plant-based spray with cedarwood and lemongrass; safe to use on dogs and around the home.
- Natural ingredients
- Non-toxic
- Pleasant scent
- Needs more frequent application
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Best oral preventative SENTINEL SPECTRUMSentinel Spectrum Chewable Tablets for Dogs
Monthly chewable that prevents heartworm, fleas, and intestinal worms; also treats whipworms.
- Broad-spectrum protection
- Tasty chewable
- Covers multiple worm types
- Requires prescription
- Higher price point
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Most trusted brand FrontlineFrontline Plus Flea & Tick Treatment for Dogs
Veterinarian-recommended topical treatment that kills fleas, ticks, and chewing lice for 30 days.
- Trusted brand
- Kills all life stages of fleas
- Waterproof
- Fleas may develop resistance
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Fast acting oral NexgardNexgard Chewable Tablets for Dogs
Beef-flavored chewable that starts killing fleas within 4 hours and ticks within 48 hours.
- Quick onset
- Palatable for dogs
- Effective against multiple tick species
- Prescription required
- Not for puppies under 8 weeks
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Best for flea-only issues AdvantageAdvantage II Flea Spot Treatment for Dogs
Topical solution that kills fleas through contact and prevents reinfestation for 30 days.
- Kills fleas on contact
- Safe for puppies 7 weeks+
- Easy to apply
- Does not kill ticks
- Greasy residue