Best toothbrush ever. Cleans well & notifies me when my 2 minutes are up. My teeth are visibly better with this toothbrush & io brushes. Great price also.

I love my Oral B IQ electric toothbrush & the replacement heads are the perfect firmness with replacement reminders, replacing every 3 months this pack lasts almost 2 years sometimes I replace before 3 months. I normally buy them on sale so it's definitely the cost.

My teeth feel like I just had my teeth cleaned in the dentist's office. Wish I'd purchased these sooner.

Best of oral b. The io series is the best yet. If you are still using the old oral b electric toothbrushes you need to upgrade to the io series! You can feel your teeth cleaner with this new brush heads compared to the old model brush heads

The best electric toothbrush on the market. I always receive compliments from my dental hygienist when I go for checkups. This is the most economical way to purchase toothbrush heads.

I'm a little gun shy about these brushes, the ones before, these the bristles kept falling out. But I bought them from another online retailer. So far this one has been good. Time will tell I guess.

I needed replacement heads and this was the best deal I found.

Oral-B suggests 2 minutes of brushing. With that in mind, I get almost 1 month only from the replacement brushes. Disappointed!

While these are a comparatively good price, I find the brushes reach the end of their expected useful life much quicker than what Oral-B says should be average. In less than a month, the blue color is completely gone, the bristles are bending outward and cutting the gums. I wonder if these are manufactured exclusively for Sam’s Club at a different quality level than those sold by Oral-B on its website or in other retail stores in single or two packs.

Earlier versions used to last 3 months...the last 3 packs, I bought in Samsclub.. each head lasts only 30 days. I think they are selling cheap versions in Samsclub.