This a great thing if you have bugs in your house. Pest defender can get rid of all kind of animals like mouse, Raccoon, Squirrel, and spiders. This electrical pest controller makes music that help the pests fall asleep. It works on battery or you can plug it in. It will kill all the animals around it in seconds but in a few months to clear the entire problem! This is a faster way to get rid of them rather than spry and putting stuff everywhere.
This relates to engineering because it is Electrical Engineering, Environmental Engineering, and it is made with glass, metal and plastic. This relates to engineering because it keep bugs and animals away. It cost about $10-$20!
