What is the difference between an undercoat rake and a FURminator?

A FURminator deShedding tool uses stainless steel teeth that reach through the topcoat. A rake has long, widely spaced teeth for dense undercoat.

Many shoppers call it the FURminator deshedding brush. FURminator describes a “stainless steel deShedding edge” that “reaches through topcoat”. Its directions say to angle “the stainless steel teeth towards the coat”. A FURejector button pushes collected hair off.

A rake works more like a wide comb. The VetriScience guide describes “long, widely spaced teeth that reach dense undercoats.”

FURminator also sells a Grooming Rake. Its own directions clear tangles with that rake or a dematting tool before deShedding.

Does the FURminator cut hair?

FURminator says no, when used as directed. The VetriScience guide warns that harsh deshedding tools may damage or break the topcoat.

FURminator says its tool works “without damaging topcoat or cutting skin.” Note the asterisk: “When used as directed.”

The topcoat is the outer layer of longer guard hairs over the soft undercoat.

That guide was reviewed by Dr. Elizabeth DeLomba, DVM. On double coats it says harsh deshedding tools “may damage or break the topcoat.”

Some commenters in Reddit threads say it cuts guard hair. Others say they never saw damage. We can’t settle that with proof.

I already used a FURminator. Did I ruin my dog’s coat?

We found no source that says how long a damaged topcoat takes to recover. Stop using that tool on this coat, and switch to tools that suit it.

A groomer can look at the coat with you.

See your vet if you notice bald patches, new patchy hair loss or irritated skin.

Do undercoat rakes cut fur?

Some do. Groomer Daryl Conner says rounded-pin rakes pull dead coat without cutting. Rakes with sharp, curved blades can cut the top coat.

Conner has worked in grooming for 40 years. She warns: “The names are interchanged all the time.” So look at the teeth, not the label.

• Rounded pins. Conner says this type is designed to remove dead coat “while not damaging the healthy coat.”
• Sharp, curved blades. On some coats, especially heavy coats, she says “they will cut the top coat.”
• Test first. Try a few gentle strokes on a small patch. Check what comes out before you go further.

Even pin rakes can snag. The VetriScience guide says rakes “may snag and pull out healthy coat.”

Test any rake on a small patch first. Stop if you see cut or broken guard hairs.

Which is better for a double-coated dog?

For thick double coats, the VetriScience guide lists a grooming or undercoat rake. It also lists a slicker brush and a metal comb.

The guide’s tip for double coats is plain: “For heavy shedding, use an undercoat rake.”

FURminator says its deShedding tool “may be used on most animals that shed,” including pets with an undercoat. So the maker does not rule out double coats.

Here is the honest middle. If your dog has a thick, medium-to-long double coat, start with a rake.

Think huskies, Samoyeds and many Border Collies, all listed as double coats in the guide. Coat condition still matters more than breed alone. Not sure? Try our dog coat quiz, or ask a qualified groomer.

Which is better for a short, smooth coat?

For short, smooth coats, the VetriScience guide lists a deshedding tool as needed in seasonal sheds. The guide does not list a rake for these coats.

Its smooth-coat examples include Beagles, Boxers and French Bulldogs. It pairs them with a bristle brush, rubber curry comb or grooming mitt.

For the deshedding tool, it says to “use with light pressure and short passes.”

On a very short coat, we’d skip the rake.

Why not use a FURminator?

FURminator itself says not to use it on non-shedding breeds or pets with particularly sensitive skin. Mats, wet coats and puppies are other reasons to wait.

• Non-shedding coats. Non-shedding breeds are off the list, per the maker.
• Sensitive skin. The maker says to stop if you notice redness or irritation.
• Mats and tangles. FURminator says to remove them first. Using the tool on matted fur “can bend or break the teeth.”
• Wet coats. FURminator says to deShed a completely dry coat. That guide warns deshedders snag on wet coats.
• Puppies. The same guide says deshedding tools can be harsh on soft coats. It suggests waiting until the adult coat comes in.

Why was FURminator recalled?

The recall notice on FURminator’s site covers its Deshedding Conditioner, in gallon units of certain lot codes. The notice does not name the deShedding brush.

The recall was done with the U.S. Consumer Product Safety Commission. Own that conditioner? Check the FURminator recall page for the refund steps.

How much does a FURminator cost compared with a rake?

FURminator prices vary by size and store. Rake prices also vary by model and store.

On October 1, 2026, Chewy listed the large long-hair FURminator at $35.27, against a $41.49 list price. That size is for dogs of 51 to 90 pounds. Prices change often, so check before you buy.

Price shouldn’t decide this alone. The right tool is the one that suits the coat.

How do I use either tool without hurting my dog?

Check the skin, work out tangles first, and use light strokes in the direction of hair growth. Stop the moment your dog pulls away.

There is no target amount of hair to pull out. Stop when your dog has had enough, not when the brush comes up clean.

What should you avoid with either tool?

Don’t press hard, don’t groom a wet coat with a deshedder, and don’t push through mats.

• Heavy pressure. FURminator warns that deep or rough brushing can irritate skin.
• Too many strokes in one area. FURminator’s directions warn against it.
• Tight mats. Mats close to the skin need a groomer, not more force.