Myth: “Compostable Bags Always Leak”—Fact or Fiction?

If you’ve ever heard someone say, “Compostable bags always leak,” you might wonder if it’s even worth using them. After all, nobody wants a messy bin. But is this reputation really deserved—or is it just a myth?

Let’s break down the truth about compostable bags and how to avoid the dreaded leaks.

🌱 The Origin of the Myth

Compostable bags are designed to break down naturally in composting environments. Because of this, they don’t use the same plastic coatings that make traditional bags completely waterproof. As a result, when food scraps or liquids sit too long, moisture can seep through the bag.

This reality often gets exaggerated into the blanket statement that all compostable bags leak all the time. But that’s not the full story.

✅ The Facts

1. They’re Built for Breathability

Compostable bags (like Owlpack Yucksack Bags) are intentionally made to be breathable. This helps reduce odors and allows organic matter to start decomposing properly. Breathability doesn’t mean “weak”—it just means they’re functioning as intended.

2. Leaks Usually Come From Misuse

Most leaks happen when bags are:

• Overfilled beyond their weight capacity

• Left in the bin for too long (especially with wet scraps)

• Used in extremely hot or damp conditions without timely disposal

3. Quality Matters

Not all compostable bags are created equal. Certified bags that meet BPI or TÜV Austria standards undergo rigorous testing to ensure durability and proper breakdown. Lower-quality, uncertified bags are more likely to tear or leak.

💡 How to Prevent Leaks

• Empty every 2–3 days: Don’t let food scraps sit too long.

• Use a bin with ventilation: This reduces excess moisture buildup.

• Line with dry material: Add paper towels, shredded cardboard, or newspaper to absorb liquids.

• Choose the right size bag: A bag that’s too small and overstuffed will almost always fail.

🌍 The Bigger Picture

Even if compostable bags require slightly different handling, the trade-off is worth it. Unlike plastic liners that clog landfills for centuries, compostable bags return to the soil in weeks or months under the right conditions.

So, do compostable bags always leak?

Fiction. With proper use, high-quality compostable bags like Owlpack Yucksack Bags are sturdy, reliable, and planet-friendly.

✨ Takeaway: Compostable bags aren’t “leaky by default”—they’re breathable by design. Treat them right, and you’ll get clean, easy composting without the guilt.