how to dispose of diffuser oil?

In this article, we discuss the various ways to dispose of your diffuser oil in a safe manner. Furthermore, we also discuss the importance of practicing safe disposal.

how to dispose of diffuser oil?

You can dispose of your diffuser oil in the following ways:

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Disposing diffuser oil

Essential oils are not the same as regular oils that may be poured down the drain or thrown away.

These oils are very concentrated, and if you want to get rid of them, you must use correct disposal procedures.

It’s a good idea to keep in mind that essential oils are combustible and designated as dangerous items. They may harm the ecosystem and even corrode your water lines.

As a result, when it comes to getting rid of essential oils, you must follow all of the proper procedures. You’ve come to the right site if you’re wondering how to do so.

If you’re wondering if it’s time to get rid of your essential oils, it could be because you no longer need them. Perhaps you’ve had them for over a year and are concerned that they’ve expired.

While essential oils have a lengthy shelf life, their medicinal effects deteriorate with time. Furthermore, certain oils begin to smell rancid, suggesting that they are no longer safe to use. That’s how you’ll know it’s time to get rid of the oils.

Before proceeding with any of the disposal techniques listed below, ensure that you have read all of the Material Safety Data Sheet (MSDS) instructions provided by the store or supplier.

This page contains all of the information you need to guarantee proper disposal and avoid putting yourself, your family, or the environment at danger. It also indicates whether or not the oils might cause damage when exposed to other chemicals.

After reviewing the MSDS, you can dispose of your essential oils using one of the ways listed below.

How to dispose of diffuser oil?

You can dispose of diffuser oils in the following manner:

  • Let it evaporate
  • Use Your Cat Litter
  • Take them to Hazardous Waste Landfill
  • Put them in Compost Heap
  • Add to Baking Soda
  • Dig Up a Hole
  • Find Other Uses for the Oils
  • Diffuse in water
  • Use for Toilet or Drain Scenting
  • In Stored Away Vehicles

We shall discuss these in more detail below.

Let it evaporate

Because essential oils are flammable liquids, they cannot be discarded in the garbage. Instead, pour little quantities of oil into a safe dish and allow it to evaporate. 

For faster evaporation, choose a dish with a bigger surface area, such as an aluminium pie plate.

Allow the oils and their containers to sit out in the open air to ensure that all of the liquid has evaporated.

Discard any residue that has remained, thoroughly wash your dish, and thoroughly rinse the containers and vials that will be reused elsewhere.

P.S. While empty essential oil containers can be discarded, we encourage reusing them around your house. They may be used to hold various liquids or as ornamental elements.

Use Your Cat Litter

You may utilise your clumping cat litter’s extremely absorbent capabilities to your advantage when disposing of essential oils.

Simply pour the oils over your litter and soak it overnight. Dispose of the trash in your regular waste disposal containers.

However, you must ensure that your cats do not use the litter once you have put your old essential oils to it. Breathing in oils can cause respiratory problems in pets, thus it should be avoided at all costs.

Take them to Hazardous Waste Landfill

Contact your local Waste Management Department for advice on how to properly dispose of your unused essential oils.

Put them in Compost Heap

Essential oils that have lost their fragrant characteristics and smell ‘off’ can simply be placed to the compost heap for safe disposal.

Add to Baking Soda

If you want to get rid of your old essential oils quickly and easily, go to your cupboard and get some baking soda.

Cover the bottom of a dish with baking soda and then pour your essential oils over it. Allow it to evaporate, and that’s all there is to it!

We have a suggestion for those who aren’t crazy about the fragrance of this combo. Place this bowl in your garage or garden.

It will not only keep the odour from entering your home, but the external climate will help hasten the evaporation process.

Dig Up a Hole

Digging a hole in your garden or lawn and dumping your essential oils into it is an environmentally responsible approach to dispose of them. Refill the hole with soil, and you’re finished!

However, before you do so, educate yourself on the impact that essential oils might have on garden plants.

Because various oils have varied qualities, some may stimulate vegetation while others may stunt the growth of your plants. Also, look into if this will have an impact on your subterranean water supply lines.

Find Other Uses for the Oils

It is usually a good idea to remember that reuse is preferable to discarding any item, especially your essential oils.

It prevents landfill sites from becoming overburdened and provides an eco-friendly option to dispose of your excess essential oils.

First, you must classify your essential oils according to whether they are aromatic or therapeutic.

You may readily repurpose oils that have lost their medicinal effects but still have an aroma.

Once you’ve separated your oils, here are some ways you may utilise them around the house to avoid sending them to a landfill.

Diffuse in water

If your essential oils still retain aromatic capabilities, you can diffuse them in water for a variety of uses.

They may be put to your cleaning bucket to provide a new, clean scent throughout the house. However, you will need to double-check which essential oils you have left behind.

After all, the fragrance of oregano floating over your house doesn’t exactly seem appealing.

When you’re done cleaning the floors, though, some Pennyroyal or mint would smell fantastic.

They also have antiseptic characteristics, which help to destroy bacteria and pathogens on the floor.

Another significant advantage is that these essential oils act as natural bug repellents, maintaining excellent cleanliness in your house.

Use for Toilet or Drain Scenting

While it is not healthy to flush essential oils, you can add 2-3 drops every few days to remove any unwanted scents. Aromatic essential oils are fantastic as toilet fresheners and drain odours.

To avoid pipe damage, make careful not to pour in too much oil and to follow it up with a steady stream of water.

In Stored Away Vehicles

Here’s some simple advice whether you’re going on vacation or have a camper that has to be stored until the next camping season.

To keep mice and other rodents at bay, use peppermint oil. Simply set a small ceramic dish on the car floor and add the essential oils.

To be safe, place a cotton ball in the bottom of the bowl. When you return to the car, you will find it insect-free and devoid of that pungent ‘stored away’ stench.


In this article, we have covered the various ways one can use in order to dispose of their diffuser oil in a safe way. Furthermore, we have also covered some alternate uses for excess diffuser oil.


Why should you dispose of diffuser oils?

When essential oils are stored for an extended period of time, they oxidise. (After one year, up to 3-5 years if properly preserved). 

Many individuals are unaware that essential oils become dangerous to use after a certain period of time. The oils may cause respiratory problems or hurt your skin as a result of microbial development and oxidation. 

Because essential oils have variable expiration dates, they are unlikely to have an expiration date label. Because many providers do not indicate the expiration date, determining when to discard our oils may be tricky.

When should you dispose of your essential oils?

The major cause of your oils losing their therapeutic benefits and scent is oxidation. Microbial proliferation is another factor for their demise. 

The shelf life of all oils varies substantially. Some can survive for 6 months, while others can live for 20 years without getting oxidised.

Citrus is one of those oils that has a shelf life of no more than 6 months. Most other oils have a shelf life of at least a year. Base oils such as sandalwood, cedarwood, vetiver, and patchouli have a substantially longer shelf life. 

Patchouli may even be stored for up to 20 years. When your oils begin to smell strange, you should dispose of them. If the scent is mild or offensive, the oil may have expired.

It is normally recommended to retain the average oil for 1.5 years before discarding it. If your oil isn’t a base oil, that is. As previously stated, base oils have a longer shelf life.

However, if you correctly store your oils, you can retain them for much longer. Keep them properly stored by keeping them in the dark, away from the hot sun, and at a cool room temperature.

What to do if you don’t want to waste your oils anymore?

  • With oils like lemongrass, it’s better to buy only what you need. The more oils you buy with a limited shelf life, the more likely you will not use them before their expiration date.

    Buying a lot of sandalwood or cedarwood isn’t an issue because they last a long time. However, for the others, it is recommended purchasing in lesser amounts.

    If you want to save money by purchasing in bulk, you might split the oil and price with a buddy. That way, you may spend less on oils while still having plenty for the next year.
  • If the firm has a high turnover, the oils are removed fresh. This implies your oils will last even longer because you purchased them after they had been extracted.
  • The more you use your oil, the more space is freed up inside the bottle. The greater the amount of space, the faster your oils will oxidise.

    This is due to the fact that the air will fill the space within the container. To avoid this, I propose moving the oil into a smaller container once it has been used halfway. The slower the oxidation process, the less room there is.


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