yes u can adjust how far it goes also the area it covers, you have to have it so your tap is behind it to allow you to turn it off or you get soaked, you can have it on as long as you want, I used it at night, then you new if you had a visit as the place was soaked, once they get it they dont come back, i put mine up now and again just to make sure, look for cheap ones, I got really cheap ones of the bid up on tv a while back, £14 they are 3 times that usually,