Props: how to make a fake blood?

One of the most important props we need - is fake blood, and one of the ways to get it is to make it ourselves. I've googled 'how to make a non-stain fake blood' and found a couple of videos, which explain step by step the easy process of making blood, which would look real, but don't leave any stains on the floor or the white shirt.

Apart from the videos - there is an incredible article on WikiHow, which introduces 3 different ways to make a fake blood yourself (http://www.ehow.com/how_4853657_make-nonstaining-fake-blood.html), for example:

1) Making fake blood from corn syrup.

2) Creating fake blood from powdered sugar.

3) Producing simple fake blood with flour.