Frequently
asked.

Two things, usually. First, chemistry. Most cultivation sanitation programs run hypochlorite, hydrogen peroxide, or peracetic acid — chemistries that work against planktonic organisms but struggle with mature biofilm, because they exhaust themselves reacting with organic material before they reach the cells inside the matrix. They also typically require high concentrations for surface kills that make them difficult to work with or require constant generation.

CLEANTheory's chemistry is different. PATHox is size-selective — it doesn't overreact with the organic load present in a cultivation environment — and its kill mechanism is unique among sanitizers and disinfectants, achieving high efficacy at low effective concentrations. It's why chlorine dioxide is widely used in water treatment, food processing, and medical device sterilization. It penetrates where other chemistries stop.

Second, more complete coverage. Even the right chemistry fails when it's only treating one contamination pathway. Failed microbial tests are almost always pressure building in multiple places simultaneously — water, surfaces, and air. What makes ClO₂ uniquely suited to cultivation is that it's a water-soluble true gas, which means it can be precision-delivered across all three pathways as a unified system. One chemistry. That's not possible with the chemistries most facilities are running, which is why rotating sanitizers without changing the underlying approach produces the pattern you're describing: temporary improvement, recurring failure.

No. It's an over-reliance on harsh post-harvest tactics that can be completely avoided with the right preventative program.

Most licensed facilities irradiate product more than they'd like to admit. Nobody advertises it. But more states are requiring package labeling if you use remediation. And the economics are brutal in ways that don't always show up on a single line item: irradiation is expensive, it degrades terpene profiles and reduces potency, it creates an operational bottleneck at the worst possible moment — after the crop is already harvested — and it doesn't fix the failure that made it necessary. Next cycle, the pressure is still there. The product goes again.

Remediation is an expensive rescue for a problem that is easy and less expensive to fix upstream. CLEANTheory is the program you run so post-harvest rescue isn't the plan.

The facilities that stop remediating don't do it by finding a better irradiator. They do it by closing the upstream pathways — keeping biofilm out of the water loop before it reaches the root zone, eliminating pathogen load on surfaces before it reaches the canopy, managing the ambient pressure that moves between rooms. Contamination pathways, addressed before the test, not after.

Chlorine dioxide is an oxidizing chemistry that works differently from hypochlorite (bleach), hydrogen peroxide, and peracetic acid — the three chemistries that dominate cultivation disinfection. The most significant difference is how it interacts with biofilm in your fertigation system.

Most oxidizers react at the surface of a biofilm matrix and get spent before they reach the cells inside. ClO₂ penetrates the matrix quickly and more effectively because its reaction kinetics are different. That's well-documented in water treatment, food processing, and medical device sterilization. It's why we work in this chemistry, and why your current program may be producing clean swabs from bulk water while leaving the insides of your laterals intact.

Three systems, three vectors.

FERTox deploys to autonomously treat your irrigation water — reservoirs, lines, drip emitters — continuously, to eliminate biofilm before it reaches your plants It installs at a single choke point between the reservoir and the manifold — upstream of everything that reaches a root — and doses continuously at calibrated concentrations through the crop cycle. In our experience most facilities begin to see visible biofilm reduction in reservoirs and emitters within the first one to two service cycles, though starting condition varies.

PATHox is an EPA-registered water disinfectant (used in the FERTox system) and surface sanitizer. Set up for grab-and-go with push-button dilution, PATHox treats grow tables, tools, floors, and every high-contact point in your facility — paired with SOPs and team training.

AIRRox is an automated ClO₂ odor management system for entry points and air handling areas — reduces odor and VOC pressure without masking agents or operational downtime.

Which one you need depends on where the pressure is coming from. Root-zone disease — Pythium, Fusarium, Rhizoctonia — or visible biofilm in reservoirs, soft lines, or emitters points to FERTox. Botrytis, powdery mildew, or cross-contamination moving between rooms points to PATHox. Odor complaints at the property line or VOC accumulation through the cycle points to AIRRox. Most real-world contamination patterns involve more than one vector, which is why three separate products exist. The on-site assessment is where we confirm it — we walk the facility, review your COA history, and score it against all three vectors before recommending where to start.

We usually start with FERTox since its results are so immediate and discernible — you can visually see the improvement in biofilm in storage tanks and soft lines. Most facilities need more than just that one. Some need all three. We figure that out together.

This comes up more than you'd think, and the answer makes sense: not all chlorine dioxide is created equally.

Most chlorine dioxide products available in indoor cultivation are two-precursor systems — produced by combining sodium chlorite with an acid activator. The chemistry generally works, but it produces a relatively impure ClO₂ with a meaningful percentage of byproducts, including chlorine and chlorite residuals. Those byproducts compete with the ClO₂ itself, reduce effective concentration, and limit how safely and precisely the chemistry can be deployed — particularly at scale and in occupied spaces. And they often come with in-facility generation that adds a layer of personnel risk.

This is one of the reasons CLEANTheory generates chemistry on-site at time of delivery, pumping it from a truck outside directly into a storage tank inside your facility, rather than shipping bottles or carboys. Purity degrades over time and with the shock of shipping. What we bring to your facility is fresh, verified, and dosed to your specific system — not chemistry that's been sitting in a warehouse for six weeks.

Chlorine dioxide can be used safely in occupied cultivation facilities when concentrations are calibrated and maintained within OSHA (0.1 ppm 8-hr TWA), NIOSH (0.1 ppm REL, 0.3 ppm STEL), and EPA worker safety thresholds and applied according to the label. CLEANTheory's AIRRox odor management system is a non-pesticidal deodorizer, not registered under EPA FIFRA, and is designed to operate below these exposure limits. Our surface chemistry, PATHox, is registered under EPA Reg. No. 73139-1 and is a terminal no-rinse sanitizer and water disinfectant; under that registration, PATHox requires no re-entry interval (REI) when applied at normally prescribed dosing. Some state programs impose additional worker safety requirements beyond the federal label — CLEANTheory programs are designed to meet applicable requirements in the markets we operate.

We design every program to operate within a facility running normal operations. That said, this isn't something to improvise. Dosing, delivery method, and monitoring matter — we provide the chemistry, equipment design, and guidance to get those right, and we're available for support throughout. Regardless of what any label permits or requires, staff should always wear appropriate PPE when handling any chemistry in the facility, and sensor monitoring is recommended in high-use areas.

Many facilities see measurable improvement in plant quality and test results within one grow cycle. Where you start matters — a facility with significant biofilm load in its irrigation system may need a tank flush and a reset before the continuous program takes hold.

Three things set the starting point. Existing contamination pressure — biofilm that has been building in an irrigation system for months does not clear in a single treatment cycle; a facility carrying heavy load usually needs a tank shock and flush first, and can see a lag of one to two cycles before the system is running clean. Vector scope — a program addressing one vector shows results along that vector sooner, while a program closing water, surfaces, and air together takes longer to stabilize and tends to hold better, because it is not leaving compounding pressure in place. Operational discipline — a surface protocol is only as good as the team running it, so facilities with existing SOP discipline usually stabilize faster than those for whom our training is the first documented protocol.

We'll tell you what to expect after the initial assessment, not by guessing before. We'd rather under-promise and over-deliver than sell you a timeline that doesn't account for your actual facility conditions.

Ongoing. This isn't a product you implement once and manage on your own. Anyone can sell you a bottle or carboy. CLEANTheory facilitates the system installs, trains your staff, reviews COAs, adjusts the program as your facility changes, and comes back on a defined cadence — usually every 30 to 60 days.

We stay in the program. That's not a feature. That's the job.

It depends on your facility — square footage, water volume, which vectors need addressing, and what's already in place. We don't publish a rate card because a FERTox program for a 10,000-square-foot facility looks nothing like one for 50,000.

What we can tell you is that the cost of a CLEANTheory program, in most cases, is less than the cost of one remediation cycle. When you consider all facets of the products and services that CLEANTheory provides, our monthly cost is really hard to beat.

Want a ballpark before we talk? Our pricing calculator estimates a monthly FERTox, PATHox, or AIRRox program from your facility's size or water use in about a minute — directional, not a quote, but a fast way to see where you'd likely land. When you're ready for real numbers, contact us and we'll have a real conversation about it.

CLEANTheory generates chlorine dioxide on-site at the time of delivery. A certified technician mixes the three-precursor chemistry in the truck, verifies concentration and pH before anything enters your system, and pumps the freshly generated chemistry directly into your storage tank. No bottles, carboys, or pallets of product to manage, store, or dispose of.

What enters your system is fresh, verified, and dosed to your specific facility — not chemistry that was mixed weeks ago, shipped across the country, and left on a warehouse shelf. Chlorine dioxide is not a stable product; concentration and purity both degrade over time, so the quality of what enters the system at delivery is the foundation of the program, not a secondary concern.

Every delivery is generated to defined specifications: concentration of 3,000 ppm (±10%), measured and confirmed before delivery — the concentration FERTox and PATHox program dosing is built around, not an estimate. pH of 6 to 7, maintained for both stability and compatibility with typical indoor irrigation water chemistry. And confirmed absence of chlorine byproducts before the chemistry enters your tank — a verification two-precursor and commodity ClO₂ products can't provide.

CLEANTheory returns on a defined cadence — typically every 30 to 60 days depending on program volume and facility size. The delivery and the service visit are the same event: chemistry generation and transfer, equipment inspection, concentration verification in the running system, and program review.

Direct, on-site service across the Mid-Atlantic, New England, and the Northeast. Authorized CLEANTheory representatives in Northern California and the Central Valley. Remote consulting, SOP development, and COA review available nationwide.

If you're outside those areas and dealing with an active problem, reach out anyway — we can often help.

Yes. Reach out directly and tell us what you're seeing — when it showed up, where in the facility, what your current program looks like. We'll tell you honestly what we can do and how fast.

Active contamination is where the urgency is real and where the wrong move costs more than the right one. We won't sell you a program that doesn't fit the situation. If we can't get to you right away, we'll tell you what you can do today to turn things around.

A few things tend to make an active contamination event worse. Don't fog the facility without a plan — fogging an aggressive chemistry such as ozone, high-concentration hydrogen peroxide, or sulfur in response to visible mold can distribute spores before it kills them, damage plant tissue, and create byproduct exposure risk for your team. Don't wait for the next COA — if you're seeing canopy symptoms or holding a failed result, the next test cycle is another 30 to 60 days of pressure building. Don't assume one vector — Aspergillus pressure showing up in flower almost never originates in flower; by the time it's visible in the canopy it has usually been building in water, on surfaces, or in the air pathway. Treating the visible symptom without identifying the source vector tends to produce temporary improvement and recurring failure.