I keep seeing ads for sainitizing wands on tv and the internet. Does anyone have one? Do they work? Worried about the after effects .
UV-C is a great germicide but most of those wands are garbage. If it's generating the UV light with LEDs, don't even bother. One exception is a LED UV cell phone disinfector. Cell phones don't take well to liquids and alcohol can mung up the screen protectors or maybe even screens. But for this application, the UVC LED is only being asked to sanitize a dozen square inches of surface space.
If you get a UVC lamp that looks like it has a fluorescent tube in it, now you're talking. But even using a handheld wand like this without eye protection will leave you hurting. The risk with UVC isn't so much a danger of cancer but it will leave your skin and especially your eyes feeling like they've been through a sand storm and it hurts for the better part of a day.
More concerning, to me anyway, is that most good UVC lamps also produce a large amount of ozone. Ozone (O3) is also a great germicide so on that score it's a win, but at those concentrations ozone is killing every living cell it touches. Sure, we all got some cells to spare (mine are around my waist) but O3 is actually pretty bad for you.
If you are very concerned about sanitizing a few particular things at a time, there are some good instructables on building a UVC light box. I have one. But oddly enough, most of the things I need to sanitize go into my clothes washer and/or dryer or my dishwasher. Whatever's left is usually mail (I actually run my mail through a lamination machine (without the laminating plastic of course)), or groceries. Most groceries get left out in the sun for 15 or 20 minutes and the stuff that I cant leave out get misted with hydrogen peroxide. H2O2 works well, and breaks down quickly into non-toxic water. And it's cheap.