Cat litter, Fabreeze, Baking Soda, will not rid the smell from your waders. You may need to mix a Clorox solution to kill anything growing in there. Soak them for at least an hour or two. After that, rinse them very well. Then dry them with Peets wader driers. In order to keep any waders a long time do the following be they neoprene or breathable, you have to maintain them properly. Hang dry them for no more than two days, preferably one. You shouldn't hang your waders too long, only long enough to dry the exterior. Hanging them stretches the glue, epoxy, rubber or whatever is used to seal them as well as stretching the fabric and neoprene. Neoprene and the adhesives creep, which means they get a permanent set in the stretch after a while. This significantly weakens the joints. Next dry the insides with a Peets drier. Then store them in a cool dry place. The waders need to be dry before you store them or they will "dry rot". Dry rot requires the presence of water; the name is deceiving. If the waders are dry, they should not smell. Bacteria and mold need water to thrive as well.
In a free society, it is not the obligation of the citizen to prove to the government that he is a good person. It is the obligation of the government to prove to the rest of the citizenry that the citizen is a bad person, with probable cause.