pretty pumped about this product [SEP] i discovered the joys of pumping mouthwash at my dentists office i guess i am pretty lazy as the thought of increasing the cap pouring and screwing the cap back on has kept me from using mouthwash for years but now i simply push on the pump and i am in business the pump is nice and puts out the right amount of liquid per pump two things as everyone else has mentioned this is labeled as a single use item i have not followed these guidelines and continue to use my pump also as others have stated this does not fit the generic walmart brand bottles i bought an expensive listerine bottle only to accidently throw it out doh so now the pump loosely hangs over my generic mouth wash that is okay i am hoping no one knocks it over with those two warnings caveats this pump works very well and is worth the money