I have been hearing about a product called Poo-pourri for some time now, and I finally got a tester sample at the ISPA show in Austin last week. In case you've never heard of it, it is a fragranced product marketed with the simple instruction: "Spritz the bowl before you go and no one else will ever know." It is a blend of natural essential oils intended to "create a barrier to embarrassing bathroom odors." Basically, you spray it liberally over the water in the toilet before you do your business, and the citrus-y oils in the product help contain the olfactory evidence. The original scent of bergamot, lemongrass and grapefruit is available in a travel kit that includes scented wipes, too.
The brand has expanded from its original offering to include a variety of scents: No. 2 has the fragrance of mandarin, bergamot and orange enhanced by peach and berries; Royal Flush for men is scented with eucalyptus and spearmint; HeavenSCENT features white jasmine florals and natural essential oils; and, most recently, Nature's Call Organic features organic essential oils.
I'm sold. You can order online or locate a retail outlet near you.