Can earplugs be reused safely?

Silicone and filtered designs (Loop, Alpine, Mack's Pillow Soft) are explicitly reusable, often for months with cleaning. Foam plugs like Mack's Ultra Soft are technically single-use because they trap moisture and bacteria after a wear or two, though many users in community threads admit to stretching them across several nights. Reviewers recommend rotating fresh pairs to avoid ear infections.