Cotton swabs (Q-tips®) have been known to clog a drain or two - cotton is not readily biodegradable, though cotton swabs are trivial in volume and are not important in the septic tank itself. BUT if your system uses a septic pump or grinder pump or sewage ejector pump, this material...
We move wastewater uphill. Build where you want. That means the age old problems: low lying marginal land, sites below gravity sewer levels, hilly terrain, lakesites and suburban developments are now a land of opportunity. You can build where you want without worry about future sewage problems...