
Plastic bags are a convenient way to store food, but they can be a curse for the environment. They take over 400 years to biodegrade and produce tons of carbon emissions during manufacturing. While it may not save time or money, washing and reusing plastic bags can help conserve resources. Some plastic bags are dishwasher-safe, but they may fold over and collect water, requiring creative solutions to keep them open. Hand-washing and air-drying are gentler on the bags and can be more effective at ensuring they are completely clean and dry.
| Characteristics | Values |
|---|---|
| Are plastic bags dishwasher safe? | Yes, but they may fold over and collect water on top, preventing the inside from getting cleaned. |
| How to wash plastic bags in the dishwasher? | Place the bag upside down on the top or bottom rack of the dishwasher, keeping it open so that the inside gets cleaned. |
| How to dry plastic bags? | Air dry them by hanging them from a drying rack, a clothesline, or letting them stand upright over wooden spoons until they are free of any lingering moisture. You can also use skewers or chopsticks to hang the bags. |
| Are there alternatives to using a dishwasher? | Yes, plastic bags can be hand washed with soap and water, or with a little dish soap and a sponge. |
| Benefits of reusing plastic bags | Reusing plastic bags saves resources such as energy, water, and non-renewable fossil fuels used in their production. It also reduces the amount of waste sent to landfills and the environment. |
| Drawbacks of reusing plastic bags | It may not save time or money, and there is a risk of bacteria or oily residue remaining in the bag, especially after storing raw meat or greasy foods. |
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What You'll Learn

Rinsing the bag before placing it in the dishwasher
Rinsing your plastic bag before placing it in the dishwasher is a good idea, especially if there are any stubborn bits of food or condiments stuck to the bag. However, this step can be skipped if you are short on time or don't have any visible residue in your bag, as the dishwasher will clean the bag for you.
If you do choose to rinse, you don't need to scrub hard or use soap at this stage. Simply give the bag a quick rinse under the tap, ensuring that any excess food or liquid is removed. Shake off any excess water before placing it in the dishwasher.
It is important to note that not all plastic bags are created equal when it comes to durability and dishwasher suitability. Thicker, freezer-style bags tend to be more resilient and better suited for reuse. If you're unsure about the durability of your bag, it's best to hand wash it to avoid any potential damage or melting.
When placing the bag in the dishwasher, it's recommended to put it upside down on the rack, keeping it open so that the inside of the bag gets cleaned. You can stretch the bag over the dishwasher prongs to keep it open and allow water to get in. If you have larger bags, you might find that hand washing is more effective, as the dishwasher may not thoroughly clean bigger bags.
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Placing the bag upside down on the rack
When it comes to cleaning plastic bags, it's important to consider sustainability and the effective use of resources. Reusable bags are a more environmentally friendly alternative to single-use plastic bags, but they require proper care to prevent issues like mould and cross-contamination.
Washing plastic bags in the dishwasher is a convenient option, and here's a step-by-step guide to doing it effectively, focusing on placing the bag upside down on the rack:
Firstly, ensure that the bag is suitable for dishwasher cleaning. Some bags, such as those with sealing devices, may not be dishwasher-safe. Always check the care instructions provided by the manufacturer.
Before placing the bag in the dishwasher, give it a quick rinse to remove any excess residue or liquids. This helps ensure that the bag is free from any large pieces of food or condiments that may affect the cleaning process.
Now, let's talk about placing the bag upside down on the rack:
- Turn the bag inside out: This step ensures that the outside of the bag, which is typically the part that needs cleaning, is exposed to the water and detergent during the wash cycle.
- Position the rack: Place the dishwasher rack in the desired position, either on the top or bottom shelf, depending on your dishwasher's design. You can place the bag on the top rack or bottom rack, whichever is more convenient.
- Place the bag upside down: Carefully place the bag upside down on the rack, ensuring that the opening of the bag is facing downwards. This position prevents water from pooling inside the bag, ensuring that the inside of the bag gets cleaned effectively.
- Keep the bag open: It is important to ensure that the bag remains open during the wash cycle. You can achieve this by anchoring the bag to the rack using dishwasher prongs or other creative methods, such as stretching the bag over multiple prongs to create a triangle shape that holds it open. This allows water and detergent to circulate inside the bag, ensuring a thorough cleaning.
- Secure the bag: If your dishwasher has adjustable tines or racks, you can adjust them to help secure the bag in place. Alternatively, you can use other dishwasher-safe items, such as cups or bowls, to prop up the bag and prevent it from folding or closing during the wash cycle.
- Choose the right cycle: Select a regular wash cycle with warm or medium-temperature water. Avoid extremely hot water as it can cause the plastic to stretch or deform. You don't need any special cycles or fancy soaps for this process.
- Remove and dry: Once the wash cycle is complete, carefully remove the bag from the dishwasher, being mindful of any water that may have collected inside. You can air-dry the bag by hanging it on a drying rack, a clothesline, or even placing it over utensils to allow proper airflow and complete drying.
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Using the air-dry setting on the dishwasher
Most modern dishwashers have an air-dry setting, which is more energy-efficient than the traditional heat-dry setting. The air-dry setting uses room temperature air to dry dishes by circulating it around the machine with internal fans. This setting is also gentler on your dishwasher and your dishes as it does not use heat, which can wear down your machine over time and cause plastic items to warp and melt.
To use the air-dry setting to wash plastic bags in the dishwasher, start by arranging the bags on the top rack of the dishwasher. Try to anchor them securely to prevent them from folding over and collecting water or being pushed around by the air and jets. Then, select the air-dry setting on your dishwasher and start the wash cycle.
It is important to note that washing plastic bags in the dishwasher may not be as effective as hand-washing and air-drying them. Plastic bags tend to fold over and collect water during the dishwasher cycle, resulting in incomplete cleaning. Additionally, the dishwasher's heat and jets can be too harsh for the bags, potentially reducing their longevity.
If you choose to hand-wash your plastic bags, you can still utilise the dishwasher's air-dry setting. Simply place the washed bags on the top rack of the dishwasher and select the air-dry option. This will allow the bags to dry thoroughly without the risk of melting or warping.
Keep in mind that not all dishwashers have an air-dry setting. If your dishwasher lacks this feature, you can still achieve air-drying by choosing a wash cycle without a drying option. Once the cycle finishes, leave the dishwasher door slightly ajar to allow excess moisture to escape, and your dishes and plastic bags will air-dry naturally.
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Drying the bag using skewers
Drying plastic bags using skewers is an easy, economical, and quick way to dry and reuse plastic bags. This method is also a great Earth Day project for kids and grandkids.
To start, fill a quart Mason jar with aquarium gravel, coffee beans, dried rice or beans, marbles, glass beads, or buttons. These items provide weight and stability to the jar while holding the skewers in place. Longer skewers are preferable, as they can accommodate bigger bags and improve air circulation underneath. Barbecue skewers, typically 15" long, are a good option. You can also use wooden dowels, available at craft or hardware stores, in place of skewers.
Stick the skewers upright into the gravel or chosen filling. The number of skewers used can vary depending on the number of bags to be dried. Remove the wet bags from the dishwasher and place them directly onto the skewers. For taller, 2-gallon-size bags, place the jar on top of an inverted bowl to elevate it and improve airflow, reducing drying time.
When not in use, gather the skewers together and store them with the jar under the sink or pull them out for grilling. Decorating the jars is also an option, using paint, ribbons, or tissue paper for a stained-glass effect.
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Ensuring the bag is completely dry before storing
Ensuring that your plastic bags are completely dry before storing them is crucial to prevent the growth of mould, mildew, or unpleasant odours. Here are some tips to achieve this:
Air-drying is an effective method to ensure your plastic bags are completely dry. Hang them from a drying rack, a clothesline, or let them stand upright on a dryer rack or over utensils until no moisture remains. If you have a dishwasher, you can also utilise its drying function by placing the bags on the top rack and anchoring them to prevent them from being dislodged by the air and water jets. While this method may not extend the lifespan of your bags as much as hand-washing and air-drying, it is a convenient option if you are already running a dishwasher cycle.
To expedite the drying process, you can turn your bags inside out before washing to expose the inner surfaces to direct airflow. When air-drying, ensure the bags are fully opened to maximise air circulation inside. You can achieve this by spreading them over jars or glasses, or using simple household items like wooden skewers and a jar filled with gravel or rice to prop them open.
In addition to air-drying, you can utilise other methods to ensure complete dryness. For instance, you can blot the inside of the bags with paper towels to absorb excess moisture before hanging them to dry. Alternatively, you can place the bags in a refrigerator, as refrigerators actively remove moisture from the air during the cooling process, although this method will result in slower evaporation due to the lower temperature.
Finally, consider investing in a simple wooden drying device or making your own with items like wooden dowels and jars. These devices are designed to hold bags open and provide ample airflow during the drying process. With these tips in mind, you can ensure your plastic bags are thoroughly dried and ready for storage, reducing the risk of any moisture-related issues.
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Frequently asked questions
Yes, you can wash plastic bags in the dishwasher, but make sure to clean them inside out and rinse off any excess food or liquid before placing them in the dishwasher.
You can dry plastic bags on the air-dry setting of your dishwasher. Alternatively, you can air-dry them by hanging them from a drying rack, a clothesline, or letting them stand upright over wooden spoons until they are free of any lingering moisture.
Reusing plastic bags can help conserve resources and reduce waste. Plastic bags can take over 400 years to biodegrade, so reusing them can have a positive impact on the environment.
Washing and reusing plastic bags may not save time or money. It can also be challenging to ensure that all bacteria and oily residue are removed, especially after storing raw meat or greasy foods.
Alternatives to plastic bags include glass containers, silicone bags, or reusable bags made from materials like cotton, bamboo, or hemp, which are more environmentally friendly and can be easily washed and reused.











































