How to Clean and Care for Your Kilner® Jars: Essential Tips
By Kilner® - Iconic Glass Jars, Bottles & Equipment | Kilner® | Published: 2026-08-05
Category: Tips & Care
Learn the best practices for cleaning and maintaining your Kilner® jars to keep them sparkling and functional for years.
Kilner® jars are a beloved kitchen staple, perfect for preserving, storing, and organizing. To keep them looking their best and functioning perfectly, proper cleaning and care are essential. In this guide, we’ll walk you through the best practices for cleaning and maintaining your Kilner® jars, ensuring they last for years to come.
Whether you’re using them for pantry storage, homemade preserves, or even as stylish drinkware, a little TLC goes a long way. Let’s dive into the dos and don’ts of Kilner jar care.
Why Proper Cleaning Matters
Regular cleaning not only keeps your jars looking pristine but also prevents the buildup of bacteria, mold, and lingering odors. For jars used in preserving, cleanliness is critical to ensure food safety. Even for dry storage, a clean jar prevents contamination and keeps your ingredients fresh.
Kilner® jars are made from high-quality glass and feature metal or plastic components like clips, rubber seals, and lids. Understanding how to care for each part will extend the life of your jars and maintain their airtight seal.
Daily Cleaning: Washing Kilner Jars
For routine cleaning, wash your Kilner® jars in warm, soapy water using a mild dish soap. Use a soft sponge or bottle brush to gently scrub the inside, especially if you’ve stored sticky or oily contents. Rinse thoroughly with clean water to remove any soap residue.
Most Kilner® jars are dishwasher safe, but it’s best to check the specific product instructions. To be safe, place jars on the top rack and avoid high heat settings, which can stress the glass. For jars with metal clips or wooden lids, hand washing is recommended to prevent damage.
- Use a bottle brush to reach the bottom of tall jars.
- For stubborn stains, soak the jar in warm soapy water before scrubbing.
- Always dry jars completely before storing them with lids on to prevent mold.
Deep Cleaning and Stain Removal
Over time, jars can develop stains or odors, especially from strong foods like tomato sauce or spices. To deep clean, fill the jar with a mixture of warm water and baking soda, letting it sit for a few hours. For tougher stains, add a splash of white vinegar. Rinse well afterward.
For cloudy glass, a solution of equal parts water and white vinegar can help restore clarity. Alternatively, use a denture tablet dissolved in water to lift stains and brighten the glass. Always rinse thoroughly after any deep cleaning method.
- Baking soda and vinegar are natural, non-abrasive cleaners.
- Avoid using steel wool or harsh abrasives that can scratch the glass.
Caring for Lids, Clips, and Rubber Seals
The rubber seals and metal clips on Kilner® jars are vital for creating an airtight seal. To keep them in good condition, remove the rubber seal and wash it separately in warm soapy water. Dry it completely before reassembling. Avoid stretching the seal, as this can cause it to lose its shape.
Metal clips should be wiped down after washing to prevent water spots and rust. If you notice any rust, gently clean it with a soft cloth and a bit of vinegar. For jars with wooden lids, like the Kilner Universal Jar Acacia Wooden Lid 0.85 Litres, avoid soaking them in water. Instead, wipe them with a damp cloth and dry immediately.

- Replace rubber seals if they become cracked or lose their elasticity.
- Store jars with lids off or slightly ajar to allow air circulation and prevent odors.
Storing Your Kilner® Jars
Proper storage is key to maintaining your jars. Store them in a cool, dry place away from direct sunlight, which can cause glass to weaken over time. If you stack jars, place a cloth or paper towel between them to prevent scratches.
For jars with dispensing taps, like the Kilner® Storage Jar with Dispensing Tap 8 Litre, ensure the tap is clean and dry before storing. This prevents residue from hardening and clogging the mechanism. Similarly, for oil bottles, like the Kilner Set of 2 Oil Bottles & Metal Rack 0.3 Litre, clean the spouts thoroughly to avoid blockages.

Common Mistakes to Avoid
Avoid using abrasive cleaners or scouring pads, as they can scratch the glass and make it more prone to breaking. Also, never put cold jars directly into a hot oven or pour boiling water into a cold jar, as sudden temperature changes can cause thermal shock and shatter the glass.
When cleaning jars with painted or decorated surfaces, like the Kilner® Ceramic Push Top 0.6 Litre Jar - Dusty Pink, hand wash only and avoid harsh chemicals that could damage the finish.
- Always allow jars to come to room temperature before washing if they were refrigerated.
- Check for chips or cracks regularly; damaged jars should be retired from use.
With these simple cleaning and care tips, your Kilner® jars will remain beautiful and functional for years. Remember to handle them gently, use mild cleaners, and store them properly. For more inspiration on how to use your jars, explore our range of Kilner® products and find the perfect jar for your needs.


