ONA Block Odor Neutralizer

Set-and-forget odor control for small spaces.

The ONA Block is a compact 3" x 3" solid odor neutralizer made for enclosed areas where spray or gel isn’t practical—closets, cars, boats, gym bags, lockers, kitchens, garbage cans, cupboards, attics, foyers, and vents. To use, remove the lid and/or liner (or punch a few holes in the cap to slow the release) and place the block where odors collect. It continuously releases ONA’s odor-neutralizing formula so smells are treated at the source rather than covered up. Replace as needed. Typical life is about 4–6 weeks, depending on airflow and temperature.