I love this dispenser, I love the design and the fact that theres two separate caps for the main part and the smaller chamber. The chamber is probably the best part of it but is also its Achilles heel. The tube makes it easy to direct whatever solution you have into the ease-of-extraction chamber but it doesnt really let all the solution to escape. When I tried to dissolve my dry in here and started shaking it, I found that there was a super concentrated puddle in that small chamber. I had to siphon it out, put it in the main portion, shake again, and rinse repeat until it was completely dissolved. It is a very minor first world problem and you will only have that problem the first time you mix your solution so it's not too big a deal for me. Just frustrating when it happened to me.