Great product for original toothbrush. Pricey though even at Sam's Club.

Seems to work great

[This review was collected as part of a promotion.] These 4 pack of oral b iO Ultima clean refills are a great price for the value. They are soft on the teeth yet durable enough to clean and reach those hard to read areas. It does not have a scent

[This review was collected as part of a promotion.] Oral-B is a great brand and on that I love. These refills, however, are lightweight. They don’t feel durable or strong. Which, I wonder in the long-term how effective they would be.

[This review was collected as part of a promotion.] I have used an oral b electric toothbrush for years. I love the smaller round brush head. I have a small jaw, so anything larger will not fit into the back of my mouth.

[This review was collected as part of a promotion.] These are better than I thought that they would be. The whole family loved them, and that is including the children! And that is saying something.

[This review was collected as part of a promotion.] I love how clean and smooth and polished my teeth feel with this toothbrush and its toothbrush heads. Soft yet effective bristles. Easy to put on and off.

[This review was collected as part of a promotion.] Power wash you teeth upgraded. Good price for the pack of 4 heads. Works great fighting plaque and germs. Strong material. No smell to it but once you brush I guess minty lol.

[This review was collected as part of a promotion.] Amazing toothbrush head replacements! Very effective in cleaning your teeth and very comfortable on your gums! They last forever and are very affordable!

Really does a great job of cleaning teeth, while being gentle on gums. Question: What is the function of that narrow little slot which is just under the bristles?