From 1 April, a new type of bin bag will become available. You can put both burnable waste and non-burnable waste in these bags. You can continue to use the existing bags as well. Although you can put both burnable and non-burnable waste in these bags, you must choose to put either burnable waste or non-burnable waste in them—not both. The message seems to be that whilst the bags can be used for both types, you must sort the contents and put them out separately.
If I may offer my personal opinion, I would like them to produce small bags specifically for non-combustible waste if there is a demand for them. It’s a bit confusing, isn’t it, that you can put both combustible and non-combustible waste in the same bag, but you’re not allowed to mix them? Atsuko ( * ॑꒳ ॑*)
Kumamoto city website https://share.google/s3PY4U7Mr0WyuqAz9