I got the Cyber Clean

I bought the Cyber Clean online. I bought this because I want to use it to clean up something that difficult to clean. Places that I hardly reach, even cleaning tool can't clean it.

The thing is in yellow color, fluorescent yellow color. I used it to clean up my computer. What I can say is this is superb. Just press it, then everything will clean. Dust is stick on the yellow thing. But when should I replace it?? Even just one used, I found that it is quite dirty. It's said that proven to kill 99.99% germs. I just wonder how accurate is it.

Overall, this is good and easy to use. Just that the price is not that cheap.