Ona Block PRO - 3 x 3-in - 170 g / 6 Oz - Solid Odor Neutralizer

Set-and-Forget Odor Control for Small Spaces - 170 g

Sprays and gels are awkward in closets, vents and storage areas, and they fade quickly. The Ona Block PRO is a solid block that you place where odors collect. It continuously releases Ona's odor-neutralizing formula, so smells are treated at the source instead of covered up. Distributor guidance puts typical life at about 4-6 weeks, depending on airflow and temperature.

This 170 g (6 oz) block measures 3 x 3 in. It suits growers and home users who need steady control in a tent vent, storage cupboard, drying area or utility space without setting up equipment. Because it is sold as a single block, it is easy to try in one location before you buy more.

Key Features & Benefits

• Solid block format — works where sprays or gels are impractical.
• Continuous release — treats odors at the source rather than masking them.
• Compact 3 x 3-in size — fits small enclosed areas and vents.
• Adjustable release — remove the lid or liner, or punch a few holes in the cap to slow the release.
• No power needed — passive diffusion means no wiring or batteries.

Who Should Use Ona Block PRO

Use it if you need low-effort odor control in small enclosed spaces such as closets, cupboards, attics, vents, garbage cans, cars, boats or gym bags. It suits indoor growers who want a passive option near vents or storage, and households that want a simple fix.

About Ona Block PRO

Ona Block PRO is a solid odor neutralizer from Ona. It weighs 170 g (6 oz), measures 3 x 3 in and is sold each. It releases an odor-neutralizing formula continuously once the lid or liner is removed.

Frequently Asked Questions

Q: How do I use the block?
A: Remove the lid and/or liner, then place the block where odors collect. To slow the release, punch a few holes in the cap instead. Position it in the area you want to treat.

Q: How long does one block last?
A: Typical life is about 4-6 weeks. Airflow and temperature change that, so expect a shorter life in warm, moving air. Replace it when you notice odors returning.

Q: Does it mask smells with fragrance?
A: It is designed to neutralize odors at the source rather than cover them up. It releases Ona's odor-neutralizing formula continuously as it sits in place.

Q: Where can I place it?
A: It is made for small enclosed areas and vents. Examples include closets, cupboards, attics, foyers, kitchens, garbage cans, cars, boats, lockers and gym bags.

Q: Why choose a solid block over a spray or gel?
A: A block works continuously without reapplication and needs no spraying or mixing. It also suits enclosed spaces where a spray or gel is awkward to use.

Q: Does it need power?
A: No. It releases its formula by passive diffusion, so it needs no electricity, fans or batteries.