Add a cup of baking soda to the toilet, leave it for an hour, and then flush. It will clean the toilet and absorb the odor. So much better than chemicals! This site also has 75 other uses for baking soda!
Once a month, add a cup of Distilled White Vinegar and a cup of baking soda during the HOT cleaning cycle. pour them directly into the drum. Then, add about ½ cup of vinegar and ½ cup of baking soda into the detergent dispenser.