Why Our EVA Bead Scented Sachets Are Better 1. Perfect, Lasting Scent Every Time. Our EVA beads act like a blank canvas, locking in the fragrance oils to deliver a pure, consistent, and true-to-scent aroma that lasts for months. Unlike natural fillers, there's no odd base odor to interfere with the fresh, clean fragrance you expect. Made from moisture-proof EVA, our beads will never get moldy or musty, even in damp closets, humid bathrooms, or steamy cars. They are the worry-free choice for any environment.