i have tried both , household products (bleach and water etc) and repti clean. but personally i prefer the repticlean because you dont need to muck around getting stuff together you just grab the bottle and spray, however i do make sure its well cleaned of and aired first before i use whatever i cleaned.
and for the 'natural' thing , it dont matter about the naural things because a snake in a man made enviroment is as un-natural as you can get, but i guess everyone has their ideas and opinoins.