Does someone in your house use your utility sink to clean out paint rollers and flush automotive parts? Oil-based paints and solvents should not be allowed to enter your septic system. Latex paint brush and roller cleanup waste should be minimized. Excess paints and stains should be taken to the local household hazardous waste collection point.
	Remember, your septic system is a living collection of organisms prepared to handle waste from your body, not your autobody.