Zerum Bloc Stick 720 g – Odor Neutralizing Block for Exhaust Ducts

Zerum Bloc Stick 720 g – Odor Neutralizing Block for Extraction Ducts

The Zerum Bloc Stick is a 720 g solid block that destroys and encapsulates odor particles instead of masking them. It comes in a doypack bag and works as a passive diffuser: it requires no electricity or fan of its own, as it is consumed through evaporation. Its best use in a grow shop is to place it inside the ventilation or extraction duct, at the end of the filter bank, where the airflow multiplies its effect throughout the entire system.

Key Features

• Enhanced duct effect: when placed in the extraction duct after the filters, the moving air diffuses the product throughout the entire system.
• 720 g solid block: it can be used whole or cut into pieces of your preferred size.
• Compatible with fan dispenser: when cut into pieces, it can be placed in a portable air freshener dispenser.
• Passive diffuser: no plug, no electricity consumption, and no maintenance.
• Complete consumable: it is consumed through evaporation until it runs out and is replaced with another bag.

How to Use

In the duct (recommended use for growing): remove the container bag and place the whole block inside the ventilation or extraction duct, at the end of the filter bank.

In a fan dispenser: remove the bag, cut the block into pieces of your preferred size, and place them inside the portable dispenser.

⚠️ Caution: the block breaks down at high temperatures. Do not place it near lights, ballasts, or heaters. If it melts, it loses its shape and its gradual diffusion.

⚠️ It loses a lot of effectiveness in open, highly ventilated, or large spaces. It is designed for enclosed areas. Keep out of reach of children and prevent ingestion.

Where to Use It

• Indoor growing: ventilation, extraction, and climate control ducts, indoor gardens, and drying areas.
• Enclosed spaces: drying rooms, kitchens, bathrooms, storage rooms, workshops, and offices.
• Transportation: cars, caravans, and boats.

Technical Specifications

• Format: solid block in a doypack bag
• Contents: 720 g
• Diffusion type: passive, through evaporation
• Use: whole in the duct or cut into pieces in a dispenser
• Caution: breaks down at high temperatures
• Manufacturer: Zerum (Spain)

Available Scents

Wild Strawberry, Melon and Red Fruits, Menthol, and Neutral. The Neutral scent neutralizes without leaving a perceptible fragrance. None of these variants is Citronella.

Related Products

• ZerumPro Gel: a refillable alternative to place inside the growing space.
• ZerumPro Spray 750 ml: to deal with odor spikes on an as-needed basis.
• Zerum Extrem 100 ml: the most powerful option for ducts in difficult cases.

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Every item goes through a check before shipping to make sure it arrives in perfect condition and ready to use.

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1. Choose the scent: the Neutral does not add fragrance, it only neutralizes.
2. Open the bag and remove the block from its container.
3. For the best results, place the whole block inside the ventilation or extraction duct.
4. Position it at the end of the filter bank, where all the airflow passes.
5. Alternatively, cut it into pieces and place them in a portable fan dispenser.
6. Keep it away from light fixtures, ballasts, and heat sources: it dissolves at high temperatures.