Keep Your Dog Away From the Septic Tank

By Elizabeth Michael

July 21, 2025

Catching your furry friend sniffing around your septic tank can be alarming, especially if you're concerned about potential exposure to bacteria or damage to your tank. Dogs have a keen sense of smell and are naturally curious, which makes your septic tank highly attractive. To keep your tank protected and ensure optimal safety, it's important to keep your dog away from it at all times.

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Why Is My Dog So Attracted to My Septic Tank?

Dogs have a heightened sense of smell, and they're instinctively drawn to waste. If they catch even the slightest whiff of waste odors coming from your tank, it's completely normal for them to investigate. Also, other animals (including other dogs) may be relieving themselves near your septic tank.

Dogs are naturally drawn to the urine and feces of other dogs, as these substances actually serve as a form of communication between animals. Additionally, urine odors sometimes indicate a "marked territory" of another animal. If a dog, a raccoon or another animal urinates around your septic tank, it's normal for your dog to want to check out the situation.

When dogs start digging around septic tanks, this may be due to a change in ground temperature, or they may have detected an underground odor. Dogs are also attracted to animal carcasses, so you'll want to check for potential rodent activity.

It's also possible your septic tank may be leaking or overflowing. In this scenario, your dog may be attracted to the physical waste products coming out of the tank. If you suspect an issue with your septic tank or it's time to schedule periodic flushing and maintenance, contact a professional septic service.

Why Do You Need to Keep Your Dog Away From Your Septic Tank?

There are many reasons not to pair dogs with septic tanks. If your dog is a digger, digging around the tank is a big no-no. Digging can damage the drain field and affect how your tank processes waste. It can also expose your pet to dangerous bacteria and chemicals present in the wastewater, potentially leading to serious illness.

A dog playing on or around an unsecured septic tank has an increased risk of falling inside. When an animal enters a septic tank, it can be exposed to harmful gases and chemicals, human waste and other hazardous substances. Falling into a tank can also cause serious bodily injury.

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Ways to Keep Your Dog Away From the Septic Tank

While there's no true solution to stopping your dog from acting on its natural instincts, there are ways to keep it at a safe distance from your septic tank. Ensuring the lid on your septic tank is heavy and properly sealed can help prevent odors from seeping out and tempting your pet. It's also important to check your septic tank lid at least once a week to ensure it's fully secure and free of damage.

What to Put Around Your Septic Tank to Keep Dogs Away

If you have room on your property, consider creating a separate, fenced-in area for your dog to play. Make sure to set up the area several feet away from the drainfield. You can also set up fencing around the drainfield and/or tank to hinder your dog from entering the area. The fence should be high enough that your dog can't easily jump or climb over it, and it's also a good idea to create a barrier to prevent digging. Try placing a layer of mesh fencing or chicken wire below the base of your fence or laying large rocks directly along the base.

More Tips to Keep Your Dog a Safe Distance From Your Septic System

Here are some more helpful tips to keep your dog at a safe distance from the septic tank:

Apply topsoil or lay plastic sheeting over the drainfield to prevent digging.
Install landscaping around the septic tank perimeter to create a thick barrier.
Consider dog training techniques that use positive reinforcement to keep your dog away from the tank.

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