Not quite — ExHale is not a grow kit, and there’s nothing you need to assemble or maintain.

ExHale is a standalone, all-natural CO₂ production system. It comes fully self-contained and ready to hang in your grow space. Inside the bag, a special strain of mycelium grows on a natural substrate, steadily releasing CO₂ through the breather patch — no tanks, no refills, no fuss.

We were pioneers in mycelium-based technology and once introduced the first retail-ready mushroom kits — but ExHale is something different: a passive, long-lasting CO₂ generator designed specifically to support healthy plant growth indoors.

ExHale was born from a deep love of agriculture and a lifetime surrounded by plants and growing systems.

"Some 20 years ago I realized the biological function of mycelium. Before that for 25 years I had lived a life of a seed breeder’s son. My father always had a saying; “First the Seed”, when I was young we would plant thousands of crosses hoping to get 20-30 that showed promise of actually becoming a hybrid worth offering to the public. This process would be years in the making." Glen Babcock The Inventor of ExHale

That mindset — patience, precision, and purpose — carried over into the development of ExHale. About 20 years ago, after years of working with seeds and soil, he discovered something remarkable about mycelium: like humans, it naturally releases CO₂ as it grows. That realization led to a new idea — could a specific strain of mycelium be cultivated not to produce food, but to continuously generate CO₂ for plants?

The answer was yes — but only with the right strain. Most mushrooms are bred to fruit, not to breathe. So we developed a non-fruiting, high-vigor strain of mycelium that channels all its energy into growth and CO₂ production. The result was ExHale: a safe, natural, and self-sustaining way to enrich your grow space — without tanks, refills, or complicated gear.

ExHale isn’t just a product. It’s a solution grown from decades of agricultural experience, built on the belief that there’s always a better, simpler, more sustainable way to grow.

Yes. ExHale CO₂ bags are completely safe to use around edible plants — including herbs, leafy greens, berries, and other fruits and vegetables. The CO₂ is released naturally by a living fungal culture inside a sealed bag, and there are no harmful chemicals, gases, or residues introduced into your grow environment.

Because ExHale bags produce CO₂ passively through a biological process (much like composting or fermentation), they are a perfect fit for indoor food production, especially for growers who care about clean, safe growing methods.

As with all indoor growing tools, make sure your space is well ventilated and your growing conditions are optimized for food-safe practices.

ExHale CO₂ bags are proudly made in the USA, using a carefully cultivated strain of mycelium and an organic substrate. Every bag is assembled and tested under strict quality control standards to ensure consistency, safety, and performance.

Our team has deep roots in agriculture, and we continue to grow and produce ExHale bags using natural processes, not synthetic shortcuts. When you buy ExHale, you’re supporting a company that values sustainability, innovation, and hands-on experience in plant science.

ExHale isn’t just another CO₂ bag — it’s the original.

We were the first company to design and launch a mushroom-based CO₂ bag for indoor gardening. Since our debut, we’ve seen many imitators — some that try to copy everything from our plastic materials to our patented mycelial genetics. But no one has matched the performance, longevity, or reliability of the original ExHale.

What sets ExHale apart:

• The Original CO₂ Bag®: We pioneered the concept, and we stand by it with our trademarked seal — so you know you’re getting the real thing.
  

• Non-fruiting strain: Our proprietary mycelium is specially cultivated to maximize CO₂ output, not mushrooms. This means more vigor and a longer lifespan for your plants.
  

• True plug-and-play: No tanks, no refills, no maintenance. Just hang the bag above your canopy and let nature do the rest.
  

• Consistent quality: Every bag is produced in a controlled environment using our own strains and formulas. Expect steady CO₂ output for 6–9 months, depending on the model.
  

• Over a decade of trust: Growers around the world rely on ExHale to deliver safe, clean, natural CO₂ — and have for more than ten years.

If you’re comparing options, ask this simple question:

Was this bag designed for mushrooms… or for your plants?

With ExHale, your plants come first. Don’t settle for knockoffs — trust The Original.