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Review on Fairy Tale Toothbrush Holder: Clean Function, Power-Saving Lamp Beads, Travel Case, Rechargeable, Wall Mount for Bathroom by Susan Forrest

Revainrating 4 out of 5

It works, but how well?

tl;dr: It's real and works, but it's not clear if it's better than other disinfection methods (at the moment). There are C products. I was also expecting it to be a glass bulb based UV lamp based on the photos but when it arrived and I saw it was an LED I was more concerned because it's hard to tell just by looking at it looks at the LED. UV-C or not. So I decided to run an experiment to test its effectiveness. The first test I ran was to see if it actually emits UV radiation, so I started with a UV-C indicator card that glows to indicate the presence of UV and/or UV-C. As you can see in the images the UV text on the card becomes visible in the sunlight and the UV-C text glows if you place the toothbrush sanitizer so that the light that comes out without being reflected around meets it. This shows that the LED is a true UV-C LED. The next experiment was to test whether UV light was strong enough to disinfect or kill bacteria. To run this test, I bought several Petri dishes pre-filled with agar and designed an experiment to compare bacterial cultures before and after exposing a swab or toothbrush to light. Seconds (a new toothbrush was used for each sample in a new quadrant of my mouth) Oral bacteria with cotton swab treatment: none: Used as a control to obtain baseline bacteria levels from 1 cycle . The side of the swab facing the light was marked and the swab was not rotated on the plate during sampling 2x sanitization: swab or brush passed 2 sanitization cycles (1x swab was not reused for this) 3 samples with 3 treatments = 9 incremental samples. The first cup was divided into 3 processing/control zones. No. Then 3 additional plates were split in half for single and double processing of each source. After all samples were plated, the plates were incubated upside down under vacuum for 2-3 days at 90-95 degrees Fahrenheit. Results: As can be seen from the pictures, an appreciable amount of bacteria grew in the control dish. The most significant results showed samples of oral bacteria taken from cotton swabs. The tablet with single and double mouth swabs showed little to no bacterial growth. The 1-time and 2-time treatment of shell bacteria from cotton swabs also showed a decrease in growth, but interestingly, the 2-time treatment of shell bacteria showed more growth than the 1-time treatment of bacteria. I suspect this is due to the uneven amount of liquid on each tampon. More on that later. Finally, unfortunately, toothbrush samples after disinfection do not differ much. Interpretation: Based on the UV indicator card results and the dramatic reduction in bacteria in the swab samples, I think it's reasonable to conclude that the UV light is doing its job and providing *some* level of disinfection. However, the issue of brush sanitizer and the inconsistencies in the sink sample challenge the simple conclusion that it works, is useful, and is worth the money. My current theory is that UV light only effectively disinfects whatever it hits and has no effect on disinfecting what it can't see (the space in the brush and the other side of the swab). I suspect that the last time I took the swab out of the sink, when I placed the sample on the agar, I collected more liquid, causing the live bacteria to migrate from the non-disinfected side of the swab to the disinfected side applied. Likewise, I suspect that the bacteria that survived on the "sanitized" brush hid between the bristles at the back of the brush and that only the bacteria at the tips of the bristles were killed. Conclusion: The LED is actually UV. -OUT. It kills bacteria. But because of how UV disinfection works, it seems unlikely that it will completely disinfect your brush and I can't say if it's any better than other methods of cleaning your toothbrush. Since I have a few petri dishes left, I can design another experiment to compare different sanitizing methods to see if it's a comparable brush sanitizer. But for now I hope this information is useful for those who are wondering if this is a real product.

Pros
  • Satisfied so far
Cons
  • Will write later