Are Epsom salts bad for a septic system?
Regarding this, what should you not flush in a septic system?
Dispose of solids appropriately. The only things that should be flushed down the toilet are wastewater and toilet paper. Do not put cigarette butts, paper towels, sanitary tampons, condoms, disposable diapers, anything plastic or similar non-biodegradables into a septic tank system.
Similarly one may ask, what cleaning products can I use with a septic tank?
Some products that you already use and have around the house are safe for your septic system. Vinegar (white vinegar and apple cider vinegar), Borax, OxiClean, and baking soda are some products that can be used to clean very well and be septic-system safe.
Water & Salt Pour a few cups of boiling water down your drain, then follow it with a two tablespoons of Epsom salt. Let it sit for a minute, and follow with another few cups of boiling water. The water and salt mixture should help break up the clog.