2 Best Self-Cleaning Water Bottles in 2025

The CrazyCap bottle has two water purification modes: normal mode and "crazy mode." According to CrazyCap, normal mode kills up to 99.99% of contaminants and is suitable for "low to medium contamination," such as from public water fountains and tap faucets. Crazy mode, on the other hand, kills up to 99.9996% of contaminants and is suitable for "medium to high contamination," such as from lakes and rivers. The normal purification cycle takes 60 seconds and the crazy purification cycle takes two and a half minutes. The CrazyCap also has an autoclean function, which turns on six times per day for 20 seconds. CrazyCap says this periodical exposure to UV-C light prevents microbial growth and odor, and it seems to work. After three days of use, I didn't notice any smells or films inside the bottle. Additionally, purified water from the CrazyCap bottle tasted significantly better than water from the tap faucet. The CrazyCap bottle is more slender than the others on this list, which I liked. ... Read full article.