Case Study: Same-day testing and treatment saved home closing

A real estate agent called Claro in a panic. A home inspector had identified microbial growth in the attic, but no formal report was available. The buyer required knowledge of the mold type and completed remediation before closing—and there was no possibility of an extension. Without same-day resolution, the deal was dead.

Claro made it happen: testing before treatment, whole-home treatment, and post-treatment testing—all completed in a single day to keep the sale on track.

Claro's pre-treatment air test of the attic confirmed what the home inspector had flagged. The attic contained 9,900 spores per cubic meter, including Basidiospores at 7,100, Cladosporium at 1,400, and Penicillium/Aspergillus at 590. The water-damage indicator Chaetomium was also present at 13 spores, confirming moisture-related mold growth in the attic space.

The contamination was real, documented, and now formally identified—giving the buyer and their lender the mold type information they required. But identification alone wouldn't save the deal. The remediation and post-treatment verification had to happen the same day.

Claro performed its patented two-step whole-home dry fog treatment immediately after the pre-treatment test. The process reduces the mold load to levels comparable to those present at the time of the home's original construction, with results guaranteed for one year.

Post-treatment air testing was completed the same day. The results came back with the strongest possible outcome: less than 13 CFU/m³—no fungal colonies detected. Every species eliminated. The attic went from 9,900 spores with active contamination to completely clean air.

The real estate agent had everything needed to close the deal: documented pre-treatment testing identifying the mold types, professional remediation, and lab-verified post-treatment results proving the home was clean—all completed within the timeline and backed by Claro's one-year guarantee. The closing proceeded on schedule.