Proof you should always wash your hands
When a child was asked to place their hand on a petri dish of agar and it was left out for a while, the results were shocking. All the bacteria and micro-organisms transferred from the child’s hand on the petri dish multiplied and reproduced so rapidly that they became visible to the human eye.
It would be best if the photographer did not open this sealed petri dish as the micro-organisms will be released into the air, releasing a foul smell. Also, if inhaled, these micro-organisms can make someone very sick. Therefore, it is advisable to avoid recreating such experiments without proper precautions. So the next time your child refuses to wash hands, show them this picture and make them realize how their hands are covered in germs and why personal hygiene is important.