Lifestraws are not the most user-friendly filtration device. If you’re really stuck drinking from a muddy puddle you’re probably going to want two bottles, a scrap of fabric as a pre-filter so you don’t clog your actual filter, and a more ergonomic filter (i.e. a sawyer squeeze if on the go, or a gravity bag system if in place). Scoop the mud water with one bottle, pre-filter into the other bottle, then use your filter.