I had a spider sat right next to this and it had no effect on any of them. I saw just as many spiders with this turned on as I did before I even plugged it in. Also it makes a horrible high pitch noise which is really irritating.
I absolutely love this! I've had other charging kits for my xbox controllers but they've always broken or the charging has stopped working after so long in the stands. However this is great had no problems with it. The only thing I dis like is the cable length. My xbox is quite far away from where I sit so kind of had to stretch a bit and the usb didn't work in a usb wall socket which was a shame but I didn't buy it for that reason.
I bought one of these as a present but I found that it very quickly became corrupt. Tried re-formatting online but it wouldn't fix the issue. Sent this back to get a replacement. The replacement has been fine and no issues -seems I just had one bad one.