Not performing as hoped.
Had reasonable expectations for this. I've seen similar devices and this price was similar to other I've seen. I did the pre-usage immersion for a minute as instructed and it seemed to pump at first while underwater. I decided to remove the sticker as instructed for use. I noticed however that the o-ring/gasket didn't seem to provide as tight a seal as I thought it should. My suspicions were confirmed and I can only get a single squirt out of it even with a full resovoir.. After 5 minutes of frustration, I put it down, and grabbed the regular dental flossers. I'll try it again tonight and see if I can get it working. I'm hesitant to try the 2nd unit I ordered and open it up because I'm afraid the seller might not take it back if I open it too. I'm not sure what the return policy will be at this point and may message the seller. I think at the very least the 1st unit is defective. If this fails, I may end up changing this to a lower rating.
Rating: 2 stars