
This is an amazing product! However, there are tricks to using it! I wish the manufacturer had instructions! First you need to understand that although the bottom of the bottle doesn't suck on a "straw" (very wasteful!), it sucks from the top. However, the bottom of the bottle moves up towards the top as the product is used. If you don't want to fill it to the brim, you need to find a thin strong needle to push the bottom up and deflate the inside. I found cheap turkey laces that worked well. If you have liquid (a viscous liquid is best - not too liquid), deflate and then place the tip on the bottle and deflate any remaining air. (You can do this without a lock pick, but you'll be squeezing the tip FOREVER to deflate!) Fill it back up!

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