There's a "trap" on the bottom that gets clogged sometimes. I was having cleaning issues recently and followed the steps I found on Pinterest. When I took the cap off the "trap" there was a ton of crud under there. We also used a powder detergent and white vinegar as the rinse agent for a couple years. All of the sudden they stopped working well. I have had to switch to liquid detergent and jet dry.
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Liz, married to Alex, momma to 4. 2 by birth & 2 by adoption.
Elissa 11, Jeremiah 10, Nathaniel 5, Edward 3
"If I have a monument in this world, it is my son" Maya Angelou