100% biodegradable--our bags do not require oxygen or sunlight to fully biodegrade. Full circle bags will decompose anywhere that natural organic material will in 9 months to 5 years. Zero harmful toxins--full circle bags will not leave behind any harmful toxins when decomposing. No expiration date--unlike some of our competitors, full circle bags will not begin to decompose while on the shelf. Will not degrade when exposed to high temperatures--our bags love all seasons and will not be negatively affected by warm or cold temperatures. Can be safely recycled-- our bags can be safely processed for recycling with any kind of plastic-- biodegradable, non-biodegradable and recycled.