It's that time of year again, and I'm adding an emergency toilet to my bug-in supplies. Since this is an urban local, digging a cat hole in the backyard every time nature calls is not feasible.

For emergency toilets, what is the preferred odor absorber to toss in after using it? I don't want to attract flies for reasons of sanitation and sanity.

Gardening lime
Sawdust
Kitty litter
Other?
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Hope for the best and prepare for the worst.

The object in life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane