Irenea8 - I hear you about not wanting to use a cup without soaking and letting it totally dry out. I soak my cups after use, and then I put them straight in a UV Sanitizer for 60 minutes. It was expensive to buy, but I feel it's well worth it. One hour later my cups are dry and sanitized, after being soaked. I read that pseudomonas often occur from dirty cups so I'm a bit paranoid! Here is the link for the one I have but I'm sure you can find others. https://www.amazon.com/dp/B08GY5VKB4