How to Use Souper Cubes MyMilk Trays with Replacement Lids for Safe Breast Milk Storage
By Silicone Food Freezer Trays & Kitchen Accessories - Souper Cubes® | Published: 2026-07-26
Category: Anleitungen
Learn step-by-step how to safely store breast milk using Souper Cubes MyMilk Trays and replacement lids. Get tips on freezing, thawing, and maintaining leak-proof seals for your baby's milk.
Breast milk storage is a top priority for nursing moms who want to preserve every precious drop. The Souper Cubes MyMilk Breast Milk Trays offer a convenient, silicone-based solution for freezing breast milk in safe, portion-controlled cubes. But to ensure your milk stays fresh and leak-free, pairing these trays with the right lids is essential. In this guide, we’ll show you how to use the MyMilk trays with replacement lids for optimal storage, from filling to thawing.

Whether you’re a first-time mom or an experienced pumper, proper techniques can extend the shelf life of your milk and prevent spills. Let’s dive into the best practices for using silicone breast milk trays and lids.
Why Choose Silicone Breast Milk Trays?
Silicone breast milk trays, like the MyMilk trays from Souper Cubes, are designed with food-grade silicone that is free from BPA, BPS, and other harmful chemicals. Unlike hard plastic containers, silicone is flexible, making it easy to pop out frozen milk cubes without waste. The trays also stack neatly in the freezer, saving space.
The MyMilk trays come in two colors: Mint and Pink. Each tray holds multiple ounces of milk, and the cubes are perfectly sized for baby bottles. But the key to maintaining freshness is a secure lid. That’s where the replacement lids come in—they snap on tightly to prevent freezer burn and leaks.
- Food-grade silicone: safe, non-toxic, and durable.
- Flexible design: easy to remove frozen cubes.
- Space-saving: stackable in the freezer.
Step-by-Step: Using MyMilk Trays with Replacement Lids
Start by washing the MyMilk tray and replacement lids in warm, soapy water. Rinse thoroughly and air dry. Make sure both the tray and lids are completely dry before use to prevent ice crystals from forming.
Pour expressed breast milk into each cavity of the tray, leaving a little headspace at the top—milk expands when frozen. Fill only up to the fill line if indicated. Then, press the replacement lid firmly onto the tray until it clicks. The lid should sit flush with the tray’s rim to create an airtight seal.
Place the sealed tray flat in the freezer. Once the milk is fully frozen (usually 4-6 hours), you can remove the cubes and transfer them to a vacuum-sealed bag for longer storage, or keep them in the tray with the lid on. For easy labeling, use a marker on the lid or tray.
- Leave headspace for expansion.
- Press lid until it clicks for a leak-proof seal.
- Freeze flat, then transfer cubes to bags if desired.
Tips for Leak-Proof Breast Milk Storage
To avoid leaks, always ensure the lid is properly aligned before snapping it shut. The replacement lids are designed specifically for MyMilk trays, so they fit snugly. If you notice any gaps, check that the tray rim is clean and free from debris.
Another tip: don’t overfill the cavities. Overfilling can cause the lid to bulge and break the seal. Stick to the recommended fill level. When stacking trays in the freezer, place them on a flat surface to maintain the seal.
If you’re using the trays for long-term storage, consider double-bagging the entire tray in a freezer-safe bag for extra protection against freezer odors. The silicone material itself is odor-resistant, but an extra layer never hurts.
- Align lid properly before snapping.
- Avoid overfilling to maintain seal.
- Use a freezer bag for extra odor protection.
Thawing and Using Frozen Breast Milk Cubes
When you’re ready to use the milk, remove the desired number of cubes from the tray. The best way to thaw is to place the cubes in a bottle and refrigerate overnight, or run the bottle under warm water. Never microwave breast milk, as it can create hot spots and destroy nutrients.
Once thawed, use the milk within 24 hours. Do not refreeze thawed milk. The MyMilk tray’s silicone material makes it easy to release cubes individually, so you only thaw what you need. This reduces waste and ensures your baby gets fresh milk every time.
- Thaw in refrigerator or under warm water.
- Do not microwave or refreeze.
- Use within 24 hours of thawing.
Cleaning and Maintaining Your MyMilk Trays and Lids
After each use, wash the tray and lids with mild soap and warm water. You can also place them on the top rack of the dishwasher for easy cleaning. Avoid using abrasive sponges that could scratch the silicone.
Over time, silicone may develop a slight film from milk fats. To deep clean, soak the tray in a solution of equal parts water and white vinegar for 15 minutes, then rinse thoroughly. Store the trays and lids in a dry, cool place away from direct sunlight to prevent degradation.
The replacement lids are durable but can wear out after many uses. Inspect them regularly for cracks or warping, and replace as needed to maintain a leak-proof seal.
- Dishwasher safe (top rack) or hand wash.
- Deep clean with vinegar solution.
- Replace lids if cracked or warped.
By following these simple steps, you can maximize the life of your MyMilk trays and replacement lids while keeping your breast milk safe and fresh. The combination of a high-quality silicone tray and a secure lid makes feeding time easier and less wasteful. Explore the MyMilk Breast Milk Trays - Mint or Pink to start your organized breast milk storage journey today.




