To be fair, these are EPI plastic, which degrades much quicker than normal biodegradable. A compostable bag is one which degrades within 3-6 months. There is no time frame quoted, but I believe these are compostable. The issue is that they are still made from similar petrochemical-based materials to conventional plastic, only with compounds added that cause them to disintegrate gradually in the presence of light or oxygen. They often then degrade into a sludge of toxic chemicals. Bioplastics made of cornstarch and other plant-based materials are a better bet. They give off CO2 as they decompose, but they’re merely expelling carbon locked in by the plant matter that originally formed them. The net effect on the environment is therefore close to zero. Here are some on Amazon: amazon.co.uk/My-AlphaPet-Compostable-Poop-Bags/dp/B01GEW7OE2?th=1&psc=1 They work out at 8p each, rather than the 3p each in the deal posted, but I haven’t looked for the cheapest, just showing that they are out there. EDIT: Here you go, less than 3p each: https://www.amazon.co.uk/Green-Maker-Compost-Biodegradable-Certification/dp/B07FSGWJSG/ref=mp_s_a_1_3?dchild=1&keywords=cornstarch+poop+bags&qid=1591037393&sprefix=cornstarch+poop+&sr=8-3
Better to get some properly compostable ones with tie handles IMHO.
Where was this deal during the great toilet paper shortage of 2020!
Nice, so when they pick it up and tie it to the tree it will eventually biodegrade