I know that this is gonna be mean & all, but why not have Bambi burgers? In my experience, the sprayers don't work; I used to live near a large apple orchard & the installed the sprayers be aide the deer were eating all the apples. The deer ended up ignoring the sprayer after a while. I've heard that hot pepper powder would work (main ingredient in those deer away powders). May, if you have an Asian supermarket nearby, you could get some & sprinkle it on the roses (be cheaper than buying the deer away stuff. Or you could go to sam's or Costco & get cayanne powder). If you'd like, I can pick up so HOT chile powder at a local asian supermart & ship it up to ya. But I know that deterring deer is one of the hardest things you can do. Ooh, just thought about coyote urine!! A local garden store here sells that stuff & I'll bet that it does wonders! I know the fox urine works for bunnies & petunias.