Works perfectly, requires two pumps for normal amount of mouthwash [SEP] This is exactly what I needed. I have been pouring mouthwash out of 1.5L bottles for years, and this pump provides a consistent, metered amount, and prevents waste. I use two full pumps to provide enough mouthwash for a proper rinse, and some people might even want three (one is definitely not enough). Works perfectly, fits perfectly, and is exactly what I wanted. Best $7 I have spent in ages. :)