The Top 5 Things to Avoid Flushing (And What Happens If You Do)

May 30, 2025
Vermont septic services company, Taplin Septic on its way to a septic call.

Keep Your Septic System Happy with These Tips

We get it, flushing something down the toilet makes you feel like it's gone forever. But if you're on a septic system, what goes down doesn't just disappear. It goes straight to your septic tank, where the wrong materials can cause clogs, backups, and even costly system damage.


Spoiler: "Flushable" doesn't always mean septic-safe.


Here's your quick guide to what NOT to flush and why your septic system will thank you.



1. “Flushable” Wipes

Just because the label says “flushable” doesn’t mean it breaks down in your tank. These wipes don’t decompose like toilet paper and can clump together, creating blockages that slow or stop your system. Stick to septic-safe TP only.



2. Feminine Hygiene Products

Tampons, pads, and applicators absorb moisture and expand, making them a major no-go. These items are designed not to break down, which is the opposite of what your tank needs.



3. Grease and Cooking Oils

Whether you pour it down the sink or flush it in a paper towel, grease solidifies as it cools, creating a sticky sludge that’s hard for your septic system to break down. This can lead to clogs and reduce your tank’s efficiency.



4. Dental Floss

It might be tiny, but flossand hair act like a net, catching and tangling other materials, which contributes to clogs and slowdowns. It’s like giving your septic tank a hairball.


5. Medications and Chemicals

Don't flush old meds, bleach, or cleaning products. They disrupt the helpful bacteria in your tank that break down waste. Without them, your system can't function properly.



✅ Bonus: Grab Our Free “Do Not Flush” Bathroom Sign!

Perfect for families, guests, or rental properties. Download, print, and hang it in your bathroom to help everyone do their part in protecting your septic system.

Download the PDF

When it comes to protecting your septic system, a little knowledge goes a long way. By keeping these five common items out of your pipes, you're doing your part to avoid backups, extend the life of your system, and save on costly repairs. Need more tips or ready to schedule a pump?


Taplin Septic is just a call away, because a healthy tank starts with smart flushing habits.

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