FAQ
Frequently Asked Question!
If you have any additional questions that are not addressed here or in the ‘Use & Care Guide’ included with each purchase, feel free to contact us by email - we’re always happy to help 🙂
We’re a small family business focused on designing great products and providing the best experience possible for our customers. Right now, we use Amazon’s fulfillment network to make ordering, shipping, and returns simple and reliable across the US. As we continue to grow, we may expand our selling platform options.
Yes, Canadian residents can also purchase our containers through Amazon.com. However, due to exchange rates, shipping costs, and customs duties/taxes, the total price is often significantly higher.
Re: Amazon.ca listings:
Please note that Canadian residents should purchase through Amazon.com not Amazon.ca. The listings you may currently see on Amazon.ca are not affliated
with us. These sellers are using our product photography and visual content without authorization.
In these cases, products may be listed by third-party or unauthorized sellers, and there is a risk of inaccurate / significantly inflated pricing, outdated inventory, or non-authentic listings.
Products purchased from these listings are not covered by our warranty and may not be genuine or supplied by us.
We do not recommend purchasing from these sellers. When purchasing on Amazon, please ensure the seller name clearly matches our social brand name –Sustainable Containables – to confirm authenticity.
Products available in Canada:
We will soon be offering “warehouse deals” in Canada. These clearance items include ‘Open Box’ items (products with damaged or unsealed packaging, but in fully working condition) and ‘Scratch-and-Dent’ items (products with minor cosmetic damage that does not affect performance).
All clearance items are inspected and tested before resale. Clearance items (including ‘Open Box’ and ‘Scratch-and-Dent’) are offered in limited quantities and may have different warranty coverage than our standard 2-year manufacturer’s warranty.
If you reside in Canada and are interested in purchasing our products, please email us at support@sustainablecontainables.com for details on current availability and terms.
Our warranty covers defects in materials and workmanship under normal, intended use during the warranty period – which is 2 years from the date of purchase. It does not cover accidental loss, damage, misuse, abuse, or normal wear and tear.
For complete warranty details and instructions on how to submit a claim, please refer to our Warranty page
Our containers are thoughtfully designed in Canada and responsibly manufactured in China by trusted production partners.
Silicone is a flexible, durable material made from silica – a naturally occurring mineral derived from sand. Unlike plastic, high-quality silicone does not contain BPA, BPS, PVC, phthalates, or other common plastic fillers.
Platinum silicone refers to silicone that has been cured using a platinum-based process rather than peroxide curing. This advanced curing method creates a purer, higher-quality silicone that is more durable, heat resistant, and less likely to contain residual byproducts or odors.
Because of its purity and stability, platinum-cured silicone is widely considered the premium standard for food-grade and medical-grade silicone products. It is valued for being safe, long-lasting, non-toxic, and resistant to cracking, staining, and leaching under normal use.
LFGB and FDA certifications are internationally recognized food-safety standards used to test materials that come into contact with food.
FDA certification means the silicone complies with US Food and Drug Administration standards for food-contact safety. LFGB certification is a stricter European testing standard that evaluates materials for safety, purity, and odor/taste neutrality.
Our silicone containers are tested to meet these standards, meaning they are made with food-grade silicone that is free from harmful levels of substances such as BPA, BPS, phthalates, and other unsafe fillers under normal use conditions.
LFGB-certified silicone is often considered the premium standard because it undergoes more rigorous testing requirements than standard FDA food-grade silicone.
Boiling before first use is highly recommended, but not absolutely necessary. We suggest it as an extra step to help remove any residual odors or trace residues from the manufacturing and packaging process.
Heat helps open the surface of the silicone material, allowing any remaining manufacturing residue to dissipate – similar to washing a new water bottle, mug, or cookware before using it for the first time.
If boiling is inconvenient, running the containers through a hot dishwasher cycle before first use is perfectly fine and should achieve a similar result.
Our containers are made from high-quality platinum-cured, food-grade silicone that is LFGB/FDA compliant and designed for safe everyday use.
The venting tab is designed to release steam during heating. When using the container in the microwave, open the vent to allow steam to escape and help prevent pressure buildup and splattering.
Note: When using the containers to heat food in the oven, always remove the silicone lid completely. Do not use the lid in the oven, even with the venting tab open.
18/8 and 304 stainless steel refer to high-quality, food-grade stainless steel commonly used in kitchenware and food storage products. The terms are closely related and often used interchangeably.
18/8 stainless steel describes the alloy’s composition: approximately 18% chromium and 8% nickel. Chromium helps prevent rust and corrosion, while nickel adds durability and resistance to heat and wear.
304 stainless steel is the technical grade name for this same general composition and is one of the most widely used stainless steels for food contact applications.
Together, 18/8 / 304 stainless steel is valued because it is strong, rust-resistant, non-reactive with food, and does not leach harmful chemicals under normal use. It is commonly used in cookware, cutlery, and high-quality food storage products.
When using the containers in the oven, always remove the silicone lid completely before heating.
To prolong the life of your containers, do not maintain temperatures above 325°F for more than 2 hours. At 400°F, limit use to short periods of no more than 30 minutes.
Silicone containers are easy to clean and can be washed by hand or in the dishwasher.
For everyday cleaning, wash with warm water and mild dish soap using a soft sponge or cloth. Do not use abrasive, metal scouring pads or harsh chemical cleaners. Rinse thoroughly and allow to air dry completely before storing.
They are also dishwasher safe and can be placed on the top rack. For best results, avoid overcrowding the dishwasher and use a low-residue or fragrance-free detergent when possible.
For a deeper clean or to help remove odors or buildup, you can occasionally use a mixture of baking soda and warm water, a vinegar rinse, or a gentle boil in water. Exposing the containers to direct sunlight can also help naturally freshen and maintain them over time.
Additional care tips, including how to remove stains and odors, can be found in the FAQs below as well as the ‘Use & Care Guide’ – which is included with every purchase.
Silicone can develop water spots or a light cloudy film after dishwasher use, especially in areas with hard water. This happens because silicone’s surface can attract and hold onto mineral deposits or detergent residue more easily than materials like glass or stainless steel.
This residue is harmless and does not aect the safety or performance of the containers.
To minimize spotting, we recommend:
- Using a rinse aid in your dishwasher
- Avoiding excess detergent
- Allowing containers to dry fully before storing
- Occasionally rinsing or wiping with a mixture of warm water and mild soap or white vinegar to help remove mineral buildup
Because silicone is naturally porous at a microscopic level, it may show cosmetic residue more visibly than some other materials – especially after repeated dishwasher cycles.
For grease or oil buildup that dish soap alone is not removing, first try scrubbing with a baking soda paste (mix baking soda with a small amount of water), or apply the paste to the area, let it dry, then rinse clean. If needed, use full-strength dish soap as well to help break down the residue before or after scrubbing.
Note: Using soaps containing oils (e.g., castile soap), essential oils, anti-bacterial agents, or moisturizers can sometimes leave a film or residue. Use the steps described above to remove buildup and restore a clean, residue-free surface.
Silicone naturally absorbs and retains odors more easily than materials like glass or stainless steel. Because silicone is slightly porous at a microscopic level, strong scents from fragranced dishwasher detergents, rinse aids, and food can become trapped in the material – especially when exposed to high dishwasher temperatures, which temporarily open the silicone surface even more.
The good news is that this is normal, a natural characteristic of silicone, and does not aect the safety or performance of the containers.
To help minimize this:
- Use fragrance-free or low-scent dishwasher detergent
- Avoid excess detergent or rinse aid
- Skip high-heat dry settings when possible
- Wash with warm water and baking soda or white vinegar when needed
- Allow containers to air out fully between uses
- Choose handwashing instead of the dishwasher when convenient
Odors can build up in silicone because it is slightly porous at a microscopic level and can absorb scents from food, detergents, and rinse aids—especially after high dishwasher heat exposure.
To remove odors, we recommend:
- Washing with warm water and baking soda, white vinegar, or lemon juice ● Boiling the container in water for a few minutes for deeper deodorizing ● Allowing the container to air out completely between uses ● Exposing the container to direct sunlight, which can naturally help neutralize and reduce odors
- Ensuring it is fully dry before storing
For strong / lingering odors, heat clean, dry containers in the oven for 20-30 minutes @ 250°F. Repeat if needed.
In most cases, odors will fade completely with one or a combination of these methods.
Silicone can sometimes develop light staining or discoloration from oils, sauces, spices, or mineral buildup from water and dishwasher detergents. These marks are usually cosmetic and do not aect performance or safety.
To help reduce or remove stains, we recommend:
- Washing with warm water and baking soda to gently lift residue ● Using a white vinegar soak to break down mineral buildup ● Soaking in an oxygen-based cleaner (such as OxiClean or Nellie’s Oxygen Brightener) for tougher stains
- Gently scrubbing with a soft sponge or cloth
- Running through a dishwasher with proper spacing and low-residue detergent
- Placing in direct sunlight (for 1 to 2 days), which can naturally help fade certain stains over time
Avoid harsh or toxic chemicals such as chlorine bleach, as they are unnecessary and may degrade the silicone over time. Bleach can also be absorbed into silicone, making it difficult to fully remove and potentially leaving a persistent, strong bleach odor.
Some deep stains (like turmeric or tomato-based sauces) may not fully disappear but are harmless and do not impact use.
Wash with warm water and dish soap after each use, using a soft sponge or cloth to avoid scratching. For stuck-on food, soak in warm soapy water before cleaning, or use a baking soda paste for more stubborn residue. Avoid abrasive scrubbers, steel wool, or harsh chemicals, as these can damage the finish over time.
After running through the dishwasher, you may need to rinse or wipe the containers to remove any water spots or polish them for a clean, streak-free finish. Drying thoroughly after washing will also help maintain their shine.
The platinum silicone lids should be cleaned and cared for according to the silicone care instructions provided above.