# Claim table — “one copper wire kills all mold forever” Reel

| Claim / issue | Evidence label | Notes |
|---|---|---|
| Copper has real antimicrobial properties. | Supported. | EPA-registered copper alloy surfaces can make limited public-health claims against specified bacteria, and EPA later added certain residual viral claims for high-copper alloys. |
| EPA confirmed 275 copper alloys killed 99.9% within two hours. | Mostly true but incomplete. | EPA registration began with 275 alloys in 2008 and later expanded. The classic public-health claim is for specific bacteria on cleaned, uncoated, hard, non-porous copper alloy touch surfaces — not “all mold.” |
| Stainless steel killed nothing for 28 days. | Not accepted as stated. | Copper often outperforms stainless steel in lab contact-killing studies, but the Reel gives an absolute comparison without enough test context. |
| One hardware-store copper wire kills every mold species on contact. | Not established. | Copper ions and copper surfaces can inhibit/kill some microbes and copper compounds are real plant fungicides. That does not prove a loose wire near a damp wall kills every indoor mold species. |
| Copper wire stops mold regrowth permanently. | False / unsafe as home advice. | EPA/CDC/WHO guidance says mold control depends on fixing moisture, cleaning/removing mold and drying materials. Mold can return wherever moisture remains. |
| Dampness and mold are linked to asthma/respiratory risk. | Supported. | Mudarri & Fisk estimated 21% of U.S. current asthma cases attributable to dampness/mold exposure; WHO and CDC link damp/moldy environments with respiratory symptoms and asthma exacerbation. |
| Bordeaux mixture shows copper can fight fungal disease. | True but limited. | Copper sulfate + lime is a real agricultural fungicide/bactericide. It is not evidence that indoor mold remediation can be done with one wire. |
| Cleaning-industry suppression explains why copper is not used everywhere. | Not proven. | There are simpler explanations: contact-only action, required cleaning, material cost, corrosion/tarnish, surface-design limits, organism-specific registrations and the need to remove moisture-damaged materials. |

## Bottom line

The Reel begins with a real scientific kernel — copper can be antimicrobial, and copper compounds have a long fungicide history — then jumps too far. A copper wire is not a mold-remediation plan. The safer expectation is: find the water, remove/clean the mold, dry the material, ventilate, and treat copper as a possible design material or lab/agricultural tool, not a miracle cure.