Yes....the blood splatter on the house was in fact another crude yet effective prop. A lot of cooking oil with a little bit of water and red food dye in a shallow clear glass container and a small fan blowing on it to keep the fluids moving. All of this sitting on top of a standard school issue overhead projector. The adults that had escorted their kids up the drive way seemed mostly disturbed by the display. The kids though didn't really pay attention to the props as they seemed preoccupied by the candy. Thanks for watching!