
Spike bacteria is there before they poop, thats why you clean the bloody cage. You think there is no bacteria if theres only newspaper? bacteria is literally EVERYWHERE, ALL THE TIME, you cant avoid bacteria. ANY place thats warm and even slightly humid (ANY enclosure) will harbour bacteria. If your removing soiled material there is no reason bacteria should be a problem. Do you sterilise your enclosure with chemicals or with steam everytime you change the newspaper? Bacteria will quickly colonise ANY surfaces including newspaper, and the floor, walls, ceiling, fittings, glass of your enclosure, and the water bowl, branches etc etc. Paper or mulch, no difference to the bacteria in a warm humid enviroment.
further, not all bacteria is bad either. standard hygene should prevent any problem.
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