While most of you wouldn’t mind caring about the hygiene of the hotels you stay in, it would come in handy if you had a way of gauging the hygiene score of a hotel room you’re about to enter. Now, you can’t afford the expensive stuff, we understand that. So here we are with an amazing DIY project where you can create black light using your own smartphone and check out what has been lying around hidden from your naked eye.
Check out the details below and let us know what you think of this project. One thing is for sure; we are definitely making going to a hotel and checking out room with this amazing black light a ritual.