How to stop motorhome waste tank smelling

RV waste tanks can become stinky and smelly, making your motorhome living experience less than enjoyable. Fortunately, there are some steps you can take to help keep the odors at bay. In this article, we’ll discuss how to stop motorhome waste tank smelling.

1. Regularly Empty the Tank

The most important thing you can do is make sure that the tank is emptied regularly. The full waste tank will produce more bad odors than an empty one. It is advisable to empty it at least once a month or whenever it reaches two-thirds of its capacity. You should also avoid overfilling it as this could lead to backups and unpleasant smells in your RV.

2. Use Holding Tank Treatments

Another key step in controlling odors from your RV’s waste tank is to use holding tank treatments. These treatments help break down solids and reduce the amount of bacteria that can cause bad smells. You should look for products that contain enzymes or probiotics as these are more effective at breaking down waste and reducing odors. Make sure to follow the directions on the packaging carefully when using any type of treatment.

3. Clean Regularly

Keeping your waste tank clean is also important to prevent bad smells. Once every few months you should give your tank a good cleaning with a mild detergent and hot water, followed by a thorough rinse. This will help keep bacteria levels in check and reduce any nasty odors.

4. Install a Vent Fan

Installing a vent fan in the RV will help to circulate fresh air throughout the waste tank and reduce any bad smells. This is particularly important if you’re on a long trip as it will prevent smells from building up inside the holding tank.

5. Keep an open window when driving

It is also a good idea to keep an open window while driving your RV. This will help reduce the pressure inside the tank and prevent odors from escaping through the vents.


By following these steps, you can help keep your motorhome waste tank smelling better and make your RV experience more enjoyable. Regularly emptying the tank, using treatments, cleaning regularly and installing a vent fan are all key steps in controlling odors from your RV’s waste tanks. With these tips, you’ll be able to enjoy a pleasant living environment without worrying about unpleasant odors.

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Ever since I was a kid, I've been fascinated by travel. I inherited this passion from my parents. Since my college years and to this day, I have had a passion for traveling in a motorhome. I am here to share my experiences with you.

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