OdorHog Activated Carbon Replacement Mesh Bag — Fits 3", 2" & 1.5" OdorHog, Freeze-Protected Pelletized Carbon, Easy Install

OdorHog activated carbon replacement mesh bag is a ready-to-install carbon refill designed to fit the 3", 2" and 1.5" OdorHog vent stack bodies and reduce unwanted smells from plumbing vents.

Swap the spent carbon in your OdorHog vent cap quickly with this pelletized activated carbon preloaded inside a breathable mesh bag. Treated with freeze protectant and sized to sit neatly inside the OdorHog body, the bag simplifies maintenance so your vent cap can keep performing without a full unit replacement. Installation takes only a few minutes and the carbon starts adsorbing odor molecules immediately.

How do I replace the carbon bag in my OdorHog vent cap?

Replacing the mesh bag is straightforward and requires just a screwdriver. Unscrew the three screws halfway, lift off the mushroom cap, place the filled mesh bag inside and reseat the cap; the design keeps the carbon contained and evenly distributed.

• Loosen three screws halfway and lift the cap straight up.
• Drop the mesh bag in with pellets evenly spread.
• Position the cap and tighten screws until snug — do not overtighten.
• Starts working right away once installed.

Will this bag fit my 3-inch, 2-inch or 1.5-inch OdorHog model?

Yes — the smaller mesh bag is sized specifically to fit inside the OdorHog body used across the 3", 2" and 1.5" vent stacks. It slides into the same cavity and sits beneath the mushroom cap so one bag design covers all three stack sizes.

• One bag fits the interior of 3", 2" and 1.5" OdorHog bodies.
• No trimming or modification required for standard OdorHog models.
• Compatible with original and most aftermarket OdorHog caps.
• Compact pelletized carbon maximizes contact area inside the bag.

How long does the activated carbon last and when should I replace it?

Longevity depends on vent use and exposure to contaminants, but OdorHog recommends replacing the mesh bag approximately every two years for typical residential conditions. If odors return sooner or the bag appears saturated, swap it out earlier to maintain performance.

• Suggested replacement interval: about every 2 years.
• Replace sooner if foul odors reappear or bag looks saturated.
• Inspect annually after installation for best results.
• Pelletized carbon can be replaced without removing the vent cap from the stack.

Is the carbon weather-resistant for outdoor vent caps?

The pellets are treated with a freeze protectant to resist cold-weather effects and maintain adsorption efficiency in outdoor conditions. The mesh bag and cap arrangement shield the media from direct rain while allowing air flow through the carbon bed.

• Freeze-protected pellets for improved cold-weather stability.
• Mesh design permits airflow while holding media in place.
• Mushroom cap prevents direct water ingress to the bag.
• Designed for typical outdoor vent exposures, not for submersion.

Who is this for: Homeowners, plumbers, property managers and DIYers who already own an OdorHog vent cap and want an easy, cost-effective way to refresh odor control. It’s best for anyone seeking a quick maintenance option that keeps the existing vent hardware in service, especially in climates with seasonal cold where freeze protection helps maintain media performance.