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popularpapaswedine posted Jul 17, 2026 8:04 PM

Oral-B iO series 5 toothbrush 2 pack $99.99

$100

$170

41% off
Costco Wholesale
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Oral-B iO series 5 2 pack on sale at Costco for the same as a single elsewhere.
Probably going to be replaced with the series 6 soon.

https://www.costco.com/.product.4000331278.html
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Oral-B iO series 5 2 pack on sale at Costco for the same as a single elsewhere.
Probably going to be replaced with the series 6 soon.

https://www.costco.com/.product.4000331278.html

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11 Comments

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Jul 17, 2026 8:15 PM
436 Comments
Joined Dec 2007
jlirwJul 17, 2026 8:15 PM
436 Comments
Bought this pack about a year ago and I'd be cautious. Two issues:

1) the battery life isn't what I hoped for - I have to charge the batteries once or twice every week brushing twice a day. The battery has run out while away on work trips. Furthermore it takes longer to charge than I would have imagined.

2) there is a real problem with bacteria build up underneath brush heads and where the head connects to the toothbrush. It gets very nasty and not hygienic. Google it!
1
Original Poster
Jul 17, 2026 11:16 PM
261 Comments
Joined Sep 2011
papaswedine
Original Poster
Jul 17, 2026 11:16 PM
261 Comments
Quote from jlirw :
Bought this pack about a year ago and I'd be cautious. Two issues: 1) the battery life isn't what I hoped for - I have to charge the batteries once or twice every week brushing twice a day. The battery has run out while away on work trips. Furthermore it takes longer to charge than I would have imagined. 2) there is a real problem with bacteria build up underneath brush heads and where the head connects to the toothbrush. It gets very nasty and not hygienic. Google it!
Any idea if the battery life is better on the series 6 or 7?
Pro
Jul 18, 2026 6:38 PM
5.7K Comments
Joined Feb 2007
neomatrixviper
Pro
Jul 18, 2026 6:38 PM
5.7K Comments
https://www.costco.com/p/-/oral-b...&langId=-1

$70 OFF
$70 manufacturer's savings is valid 07/17/26 through 07/26/26. While supplies last.
Limit 3 per member.

Includes 2 Handles, 4 Brush Heads, 2 Charging Stations
2 Premium Travel Cases
Visible Pressure Sensor to Protect Gums
5 Cleaning Settings
Bluetooth Connectivity to Oral B App
Jul 21, 2026 2:38 AM
1.2K Comments
Joined Jan 2016
Parad153Jul 21, 2026 2:38 AM
1.2K Comments
$8 for shipping
Jul 22, 2026 5:12 AM
108 Comments
Joined Jul 2016
choowiaJul 22, 2026 5:12 AM
108 Comments
Quote from papaswedine :
Any idea if the battery life is better on the series 6 or 7?

Series 7 and up has the fast charging under 3 hours. Supposedly battery life is 14 days, I've gone multiple weeks without charging my iO7. My iO7 also has a screen that tells you the battery life. For the bacteria build up/general cleaning I always use an ultrasonic cleaner and it easily manages cleaning.
Jul 23, 2026 4:40 PM
145 Comments
Joined Feb 2020
hexiseJul 23, 2026 4:40 PM
145 Comments
You can get it at warehouse at $99 to avoid shipping cost.
Jul 23, 2026 8:16 PM
47 Comments
Joined Sep 2008
RickBJul 23, 2026 8:16 PM
47 Comments
Quote from jlirw :
Bought this pack about a year ago and I'd be cautious. Two issues:

1) the battery life isn't what I hoped for - I have to charge the batteries once or twice every week brushing twice a day. The battery has run out while away on work trips. Furthermore it takes longer to charge than I would have imagined.

2) there is a real problem with bacteria build up underneath brush heads and where the head connects to the toothbrush. It gets very nasty and not hygienic. Google it!
Longer, indeed. The Series 5 charges in 16 hours, far more than Series 7 and higher which charge in 3 hours. At the point where base meets brush head, toothpaste and gunk do accumulate and need to be cleared fairly frequently. A really good rinsing does not fully prevent the buildup.

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Jul 24, 2026 4:11 AM
1.1K Comments
Joined Feb 2012
KiraOfTheSkyJul 24, 2026 4:11 AM
1.1K Comments
Bought this a couple weeks ago, is it hard to get a price adjustment at the counter?
Jul 24, 2026 2:29 PM
110 Comments
Joined Sep 2016
niesacaseinJul 24, 2026 2:29 PM
110 Comments
Quote from KiraOfTheSky :
Bought this a couple weeks ago, is it hard to get a price adjustment at the counter?
They shouldn't give you a hard time with a price adjustment as long as your purchase was made within the last 30 days.
Jul 24, 2026 7:52 PM
405 Comments
Joined May 2022
lmaololroflJul 24, 2026 7:52 PM
405 Comments
Quote from RickB :
Longer, indeed. The Series 5 charges in 16 hours, far more than Series 7 and higher which charge in 3 hours. At the point where base meets brush head, toothpaste and gunk do accumulate and need to be cleared fairly frequently. A really good rinsing does not fully prevent the buildup.
Quote from choowia :
Series 7 and up has the fast charging under 3 hours. Supposedly battery life is 14 days, I've gone multiple weeks without charging my iO7. My iO7 also has a screen that tells you the battery life. For the bacteria build up/general cleaning I always use an ultrasonic cleaner and it easily manages cleaning.
Quote from jlirw :
Bought this pack about a year ago and I'd be cautious. Two issues:

1) the battery life isn't what I hoped for - I have to charge the batteries once or twice every week brushing twice a day. The battery has run out while away on work trips. Furthermore it takes longer to charge than I would have imagined.

2) there is a real problem with bacteria build up underneath brush heads and where the head connects to the toothbrush. It gets very nasty and not hygienic. Google it!
Any thoughts on Oral-B iO Series 5 vs Sonicare 6400?
I'm comparing this deal vs Sonicare 6400 for $29.96 on kohls.
Sonicare 6400 will be $60 for 2
Costco pack Includes 2 Handles, 4 Brush Heads, 2 Charging Stations. So there are 2 additional heads.
So the price difference is not a whole lot, but Sonicare is slightly better priced even if we include the cost of extra heads.
Thoughts?
Today 12:24 AM
34 Comments
Joined Nov 2012
leshricToday 12:24 AM
34 Comments
Dead? Site shows $170

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