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Hartz UltraGuard Plus Flea & Tick Collar for Dogs, Medium & Large Breeds

Hartz UltraGuard Plus Flea & Tick Collar for Dogs, Medium & Large Breeds

By Hartz 9 reviews analyzed Updated Nov 2025 90% confidence
4.3 /10
Quality
5.5
Value
6.3
Design
6.0
Function
4.8
Durability
6.0

Quick Verdict

The Hartz UltraGuard Plus Flea & Tick Collar works for some dogs but has caused adverse reactions in others. Users appreciate its ease of use but are concerned about negative health impacts.

Quick Stats

Reviews Analyzed 9
Would Recommend 44%
Would Buy Again 33%
Avg Lifespan 4 months

Pet Compatibility

🐕 Dogs
Suitable
🐈 Cats
Caution

Critical Warnings

high

Potential allergic reactions and adverse health effects.

Prevention: Consult a vet before using on pets with sensitivities

Pros & Cons

Pros

  • Effective Flea Control (3)

    Effective in controlling fleas with reflective safety features

  • Convenient Flea Control (2)

    Easy flea control without having to worry about messy cleanups

  • Cost-Effective (1)

    Affordable price point compared to other flea treatments

  • Easy to Use (1)

    Simple to put on and requires no ongoing maintenance.

  • Ease of use (1)

    Protecting your pets from fleas got simpler and easier with hassle-free service.

Cons

  • Chemical Sensitivity (1) major

    Some dogs may experience adverse reactions(skin irritation) to the chemicals in the collar.

    Tip: Do a patch test on a small area of skin before using the collar.

  • Lack of Long-Term Effectiveness (1) medium

    The collar may not provide long-term protection.

  • Delivery Issues (1) minor

    Occasional issues with receiving the correct number of collars ordered.

    Tip: Contact customer service to resolve the issue.

  • Health Concerns (1) major

    Concerns of this product causing cancer on users.

Quality Trend: Declining

Based on recent reviews, larger size dogs are finding it difficult to stay safe as well as face massive allergic reaction times resulting widespread inconvenience and difficulty.

Older Reviews Said:

Mixed

Newer Reviews Say:

Negative

Who Is This For?

Best For

Skip If

  • Dog owners with allergies and weakened immune. — Some dogs who used this product have reported adverse reactions including allergic reactions,poor health conditions and potentially causing further damage.

Durability & Care

Expected Lifespan 3-6+ months

Factors: Chemical composition decay based on exposure to water, sunlight and environment type

Cleaning Methods

Machine wash
Hand wash
Spot clean

Care Tips from Users

  • 💡 Application in ventilated cool space to prevent causing its toxic effects.

Floor Compatibility

Hardwood
⚠️ Tile
Carpet
Vinyl
Laminate

Rating Distribution

3.1
9 reviews
5★
44%
4★
11%
3★
0%
2★
11%
1★
34%
effective (2) easy (2) reaction (1) cancer (1)

Common Questions

Can it should be worn beside drinking water or not?

No, an improvisation of silicone based sleeve solves the problems.

Highlighted Reviews

— Audra

"I use these collars on both my dogs and I have never had a flea problem. I really like the reflective safety feature too."

— an apple a day.

"Causes CANCER!!!! What were they thinking?? I did not use it!"

Bottom Line

4.3 /10
Average