you push the peddle it goes down, you let go it comes back. while they caper around the woods, fairies are about and out to cause mischief! that is, a person’s name is spelled differently or marked in some other way than what it is usually listed as. it took care of the gunk on my 20-plus-year-old grill with no problem at all and then easily hangs on the deck near the grill so we can just grab it when it's time for another cleaning. you should get a screen similar to the one below. 