Here is an emergency toilet that you can easily carry to any location and use when camping and hunting. This Honey Bucket Emergency Toilet Seat can be used on 3 to 6 gallon buckets. You can get it with Eco Gel, which solidifies liquid waste and deodorizes your portable toilet.
Each Eco Gel pack can treat up to 1g of liquid waste. You just need to make sure you know the laws for disposing of human waste in your area.