We are delighted to offer friends of mango mutt these great biodegradable and compostable dog poop bags! Why put something that is biodegradable into a plastic bag headed for landfill when you can use these guys which disappear naturally in around 40 days! They are totally biodegradable and compostable meaning that they will be completely broken down naturally by micro-organisms in the soil within a few months - this reduces unsightly short and long term littering problems - it takes over 100 years for a normal plastic bag to fully decompose! Plus these dog poop bags can be digested by wild birds and animals - thousands die every year from eating plastic litter unfortunately. They are based on a renewable resource - GM free corn starch (like corn flour and they smell a bit like popcorn!) They are very strong, leak proof and will not dissolve in water. They feel very silky and thick - so picking up is less "hands-on"! Plus they are easy to close - there is no tying needed, just push one top edge through the hole and you have done something truly responsible for you and your environment!