Tips
For example:
Never invoke anything bigger than your head.
Pastel colored candles in the shape of cute animals are like direct sunlight to the Powers of Darkness.
For those situations where a fresh, living, sacrifice is not available, The lower ranks of demons can be fooled by microwaving a previously frozen Chunk of ex-victim and cleverly jiggling it. However, a mock victim sculpted from Spam is unacceptable.