Catchy Slogan Ideas???

Ok, so I am doing a brochure for Biology about Bio-engineered food, which is food that has been altered using DNA. I am trying to convince people that food which has been chemically altered should be labeled to notify people of any changes in it, etc. I need a slogan that will want to make people read the brochure. I was thinking something such as "Do you know what is in your food?" but it sounds really boring. I need something more catchy and enticing, any ideas? Thanks