The bug zapper was good to go almost immediately and did not require hardly any assembly. I hung it outside in a convenient spot and it was attracting bugs in no time at all. I much prefer this eco-friendly type of contraption which eliminates the need for chemical solutions and sprays. I like the fact it is rechargeable too. Very useful is the removable tray from which I am able to remove any debris with the brush provided and keep the bug zapper clean. Its portability means that if the odd fly does manage to get into the house, I can move the zapper indoors and get rid of it safely and effectively. I am very confident when it comes to the safety aspects, particularly as I know that little fingers are unable to penetrate the plastic housing to the internal grid. I have no qualms at all when my grandchildren come over to visit that they will come to any harm. Love it!