Concrobium Mold Control is the name most Canadians know: a bleach-free, sodium-carbonate-based mold treatment sold in every Home Depot, Canadian Tire, and hardware aisle in the country. It kills mold at the root and leaves an invisible barrier that helps prevent regrowth — Health Canada DIN-registered as a fungicide, EPA's lowest toxicity rating (Category IV), safe to use in occupied spaces.

But it doesn't remove stains. Concrobium's own FAQ says it plainly: “Concrobium Mold Control contains no bleach or whiteners and will not change the appearance of the mold.” For contractors doing remediation, the stain is the job — and that's where a professional stain remover comes in.

Full disclosure: we manufacture MoldForge Pro in North Saanich, BC. This page is a factual comparison to help Canadian contractors pick the right tool for the job.

What Concrobium is genuinely good at

• Prevention. The encapsulation barrier keeps new mold from growing on treated surfaces — the best reason to use it.
• Safety. No bleach, no ammonia, no VOCs, odourless; fine around occupants without heavy ventilation.
• Availability. Stocked in Canadian retail nationwide — no ordering, no waiting.
• DIY scale. The 946 mL trigger spray covers roughly 250 sq ft; the 3.78 L jug covers 350–400 sq ft through a pump sprayer.

For prevention and occupant safety, it's the right product. We don't pretend otherwise.

Where contractors hit the wall

Concrobium Mold Control does not change the appearance of mold staining. Their FAQ's advice: “take cosmetic steps to remove the stains, and reapply Concrobium Mold Control on the cleaned, dry surface to prevent future mold growth.”

That cosmetic step — instant removal of black staining on attic sheathing, framing, concrete, drywall — is a stain remover's job. On a remediation schedule, the sequence is: remove the stain, then treat to prevent regrowth.

Concrobium also sells a dedicated stain remover (Concrobium Mold Stain Remover, two-part RTU system, 1 gallon) — a two-step process where a single ready-to-use jug means one step.

The numbers, side by side

	MoldForge Pro	Concrobium Mold Stain Remover (2-part RTU, 1 gal)	Concrobium Mold Control
Job it does	Instant stain removal	Stain removal (two-step)	Mold kill + regrowth prevention
Price	$38.95 CAD/gal, contractor-direct	$45.00 CAD for 1 gallon (Safety Express, verified 2026-10-13)	Consumer sizes at Canadian retail (946 mL spray, 3.78 L jug)
Ready to use	Yes — one jug, no mixing	Yes — but two parts, two steps	Yes — RTU
Bleach-based	Yes	No	No
Made in	Canada (North Saanich, BC)	—	Widely stocked across Canada
Minimum order	4 gallons (one case)	Per unit	Per unit

These are published prices and availability facts — not a claim of equivalent performance.

Concrobium vs RMR-86 vs MoldForge Pro

Searching the three-way comparison? Here's the short version: RMR-86 PRO 3.78 L is listed at RONA.ca for $82.99 CAD (online-only special order, not stocked on shelves — verified 2026-10-18) versus $38.95 CAD/gal for MoldForge Pro. RMR-86 has no official Canadian distributor; its Canadian supply runs through US direct orders and third-party retail. Full factual breakdown: the MoldForge Pro vs RMR-86 comparison and the RMR-86 alternative guide for Canadian contractors.

What to check before choosing

• Match the product to the job. Prevention after remediation → Concrobium Mold Control. Stain removal on a job site → a bleach-based stain remover.
• One step or two. Two-part systems add a second pass across every square foot on site.
• Coverage. MoldForge Pro covers approximately 200–250 sq ft per gallon, depending on the surface.
• Label and SDS. Read both before use; follow PPE, handling, and storage instructions.
• Freight. MoldForge Pro freight is quoted separately per order.
• Surface compatibility. Test a small area first on any new surface.

The honest scope

MoldForge Pro is a stain remover — the step remediation pros start with, not the whole job. Moisture correction, containment, disinfection, and ventilation are part of proper remediation; fix the moisture source first. And for the prevention step after the stain is gone, a product like Concrobium Mold Control is a reasonable follow-up.

MoldForge Pro: the stain remover remediation pros start with — not the whole job.

Get contractor-direct pricing

Contractor-direct pricing at $38.95 CAD/gal, 4-gallon case minimum, shipped across Canada from British Columbia. Request contractor pricing or read the MoldForge Pro vs RMR-86 comparison.