Are formaldehyde-based deodorants treatable in waste treatment systems?
Yes. They’ve been studied extensively, and independent studies substantiate that formaldehyde is readily biodegradable and treatable as long as the treatment system is properly sized and operated (for treating holding tank waste). RV holding tank waste is so concentrated (compared to household waste), it can cause problems in undersized or improperly maintained treatment systems even if no deodorants are present.