These are used items. Worked and still working used them in our garage and got rid of the mice that were in the garage, which allowed me to tear down and get rid of the junk and bad lumber in there. Please check the pictures as you will see they work. all you do in plug in an outlet and look on the side that has no printing and near the top on side is a small push button to turn on when blue lights come on it is working. Put one on each side of the area you want to use for and you are set to go took about one week till i noticed a decrease in mouse dropping by the end of fourth week there were none. Your time might take longer or less time depending on how large they area or how many there are but it does work. It did not bother my dog that went in the garage either. Thank you for looking and please check my other items up for sale. You are getting both of these.