Any time you introduce a toxin into your body it is not good. When you use non organic green coffee for enemas you are running the risk of introducing and absorbing the very thing you are trying to control --- toxins. Stick to organic. If you are doing it for health and well being than do it completely right.
The pesticides that are used are plenty, they get into the ground and the plants absorb it; not to mention the chemical fertilizer that is used.