Deep Sanitizing & Disinfection in Ontario
What deep sanitizing and disinfection covers
This category sits at the end of a hoarding cleanup, after the bulk removal and sorting is done. Once a property is cleared down to bare floors, walls, and fixtures, the crew shifts from hauling to decontamination: killing bacteria, mold spores, and odor-causing organisms that have built up over months or years. That usually means enzyme treatments and antimicrobial fogging, scrubbing down surfaces that have absorbed urine, feces, spoiled food, or standing moisture, and sealing or treating subfloors and drywall where contamination has soaked in. In cases involving pest infestation, biohazard material, or vermin waste, the disinfection step is what actually makes a home livable again, not just empty.
We list 22 companies in Ontario that offer this as part of their hoarding cleanup work, ranging from firms that treat it as a standard final step to specialists who bring in medical-grade equipment and biohazard certification for the heavier jobs.
What to look for before you hire
Ask what products and equipment they actually use (hospital-grade disinfectants, ozone or hydroxyl generators for odor, HEPA-filtered equipment for airborne contaminants), whether they test air quality or surfaces afterward, and whether the crew has biohazard or infection control training rather than general cleaning experience. Get clarity on what's included versus billed separately: subfloor treatment, mattress and upholstery disposal, and pest-related sanitizing often carry extra costs that should be quoted upfront, not added later.
How we score these companies
Our rankings weigh verified experience with hoarding-specific decontamination, equipment and certifications, response time, and how clearly companies price their sanitizing work. See the full ranked guide to hoarding cleanup companies for how these 22 compare, and our methodology page for exactly how we weight and verify each factor.
Connect with deep sanitizing & disinfection
Tell us what you need. We'll match you with providers in your area who handle this work. There's no obligation.
All deep sanitizing & disinfection, ranked by score and relevance
59 businesses. The order weighs each business's overall score by how much of its reviewed work is deep sanitizing & disinfection, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.
When you submit a quote or contact form here, we may pass your enquiry to partner providers who can do the work, and we may receive a referral fee. Our rankings and scores come from our published scoring method only and are never influenced by referral fees.
Common questions about deep sanitizing & disinfection
- How much does deep sanitizing and disinfection cost after a hoarding cleanup?
- It depends heavily on the level of contamination and square footage, but expect it to be priced separately from junk removal, often as a per-room or per-square-foot rate once bulk items are out. Homes with mold, pest waste, or saturated flooring cost more because subfloors and drywall may need treatment or replacement, not just surface cleaning.
- Is disinfection always necessary after a hoarding cleanup?
- Not always, but it's strongly recommended whenever there's been long-term buildup of organic waste, pest activity, moisture damage, or strong odors. A home that was mostly cluttered with intact, dry belongings may only need a standard clean, while one with animal waste or rot needs proper sanitizing to be safe to live in.
- What should I expect during a deep sanitizing appointment?
- After the space is cleared, expect the crew to inspect for contamination hotspots, apply enzyme or antimicrobial treatments to affected surfaces, run fogging or ozone treatment for odor, and in some cases test air quality afterward. It's typically scheduled as a separate visit or phase from the initial cleanout, not done simultaneously.
- How do I judge whether a company did the job properly?
- Ask for before-and-after documentation, request the product data sheets for what was used, and if odor or mold was a concern, ask whether they'll do a follow-up check. A company confident in its work will explain what it treated and why, not just say the space was "cleaned."
Guides to choosing deep sanitizing & disinfection
- What happens during a deep sanitizing and disinfection visit
A step-by-step look at what a deep sanitizing and disinfection visit actually involves after a cleanout, from prep to final inspection.