Customer reviews from waterpik.com
Waterpik - Cordless Gem 5100 Rechargeable Water Flosser, 2 Settings, Easy Spin Tip Rotation, ADA Accepted - White
Average customer rating
4.5
(43 Reviews)
Rating breakdown 43 reviews
5 Stars
32
4 Stars
7
3 Stars
1
2 Stars
0
1 Star
3
83%of customers recommend this product.
(
10 out of
12)
Customer Reviews for Waterpik - Cordless Gem 5100 Rechargeable Water Flosser, 2 Settings, Easy Spin Tip Rotation, ADA Accepted - White
Posted by: JBM1
Verified Purchase:Yes
I wish it were a little stronger, like the one for the home countertop. I found it had less pressure, and with tight spacing, a stronger flow works best. I also wish the water tank were a little larger, since I have to refill it at least once.
Otherwise, I’d give it a 5-star rating for the size, portability, and ease of use.
Otherwise, I’d give it a 5-star rating for the size, portability, and ease of use.
I would recommend this to a friend!
Written by a customer while visiting waterpik.com
Posted by: DVisadisappointedcustomer
Verified Purchase:Yes
within 3 weeks, the Waterpik started turning on in the middle of the night. I would turn it off and would turn on randomly. After some research online, it looks like water is getting into the electronics and causing the random turning on at night. I only use it at the sink and not in shower as advertised. Very disappointed as this is not cheap and it is a Waterpik.
No, I would not recommend this to a friend.
Response from waterpik.comBy Waterpik Product Support, September 28, 2026
Hello- We're sorry this happened and can certainly understand your disappointment. The WF-27 is backed by a two-year warranty, and we'd be more than happy to help. Please give us a call at (800) 525-2774 or email us at smreviews@waterpik.com so we can assist you and get this resolved.
Written by a customer while visiting waterpik.com
Posted by: Hawk 22
Verified Purchase:Yes
It works well and doesn't get water all over my bathroom vanity.
Written by a customer while visiting waterpik.com
Posted by: Linda26
Verified Purchase:Yes
I have only been using my waterpik flosser for a few weeks but it works well. The reservoir holds enough water to be able to floss each area several times. I have not charged it since the first day. I’m very happy with this product.
I would recommend this to a friend!
Written by a customer while visiting waterpik.com
Posted by: Anonymous
Verified Purchase:Yes
I purchesed this product to use on my trip to England. I charged the Pik before my trip, The new waterpik did not work.
Response from waterpik.comBy Waterpik Product Support, September 3, 2026
Hello MikeDoyle - Thanks for sharing your experience. We're sorry to hear your Cordless Gem 5100 did not work during your trip. This model is designed for global voltage, so only a plug adapter is needed to fit the outlet in the country you're visiting. If you're still experiencing issues with the unit, please contact our customer service team at 1-800-525-2774 or email smreviews@waterpik.com so we can help.
Written by a customer while visiting waterpik.com
Posted by: Momoftwins
Verified Purchase:Yes
Hi my son really likes the Water pic that you sent us and I cleaned out the bottom and the top once a week for him so that he can keep it clean all the time thank you so much for sending it to us and he uses it for his top braces and his bottom teeth right now
Written by a customer while visiting waterpik.com
Customer Rating
1
Cord and Device melted causing potential fire risk
on August 31, 2026
Posted by: Dlee
Received product and plugged in for initial charging. Woke up to find that the power cord and device had overheated and melted. Was very fortunate that this failure didn’t result in a fire. Combined with the timing of the overnight charging, this could have in resulted in a catastrophic event.
No, I would not recommend this to a friend.
Response from waterpik.comBy Waterpik Product Support, September 2, 2026
Hello Dlee- Thank you for bringing this to our attention. We are very sorry to hear about your experience with the WF-27. This is certainly not the experience we want for our customers. Please contact us directly at smreviews@waterpik.com or call 1-800-525-2774 so our team can gather additional information and assist you further. We appreciate you making us aware of this issue and look forward to helping resolve it.
Written by a customer while visiting waterpik.com
Posted by: LPLove
Verified Purchase:Yes
I hesitated to purchase a waterpik because I didn't think I'd use it. My dentist recommended this portable version and it's so easy to use I've been using it regularly. The chamber is large enough to do my whole mouth without refilling. I highly recommend this product.
I would recommend this to a friend!
Response from waterpik.comBy Waterpik Product Support, August 27, 2026
Hey LPLove - thanks for your feedback! We're so grateful that you're loving how easy the WF-27 Cordless Gem is to use, and that the portable size and reservoir capacity work great for you! We really appreciate you taking the time to share your thoughts. Happy flossing!
Written by a customer while visiting waterpik.com