The question assumes the answer is a product, and that assumption is what keeps mold problems alive. Bleach, vinegar, hydrogen peroxide, the sprays at the hardware store: each can kill some mold on contact, none of them removes the roots inside drywall and wood, none removes the dead material that keeps triggering allergies, and none touches the moisture feeding the colony. And applying any of them means scrubbing, which throws live spores into the air of your home. There is no liquid that makes black mold safe to handle yourself.
What actually ends a mold problem is a sequence, run by people trained for it: find and fix the moisture source, seal the area under negative air pressure, remove contaminated materials, clean and HEPA-filter the space, verify it afterward. Skip a step and it returns. That sequence is what Nonstop Restoration runs on every Calgary remediation, to IICRC S520 standards, starting with a free inspection so you know the real scope before anything gets disturbed: (403) 620-8489.