I have been using these for over 6 months now.
I still have not worn one out.  After 6 months of use, I am just about ready to replace my toothbrush.  I did not get that type of longevity out of oral B or reach.<br /><br />I started buying these in an effort to reduce the amount of disposable plastic that we use as a family.  Very pleased.<br /><br />I will say, the texture of the bamboo feels a bit fidderent than plastic in my mouth.  Not as problem, just something to note.
Rating: 5 stars