We rarely wash our bags. Our normal routine after a camping trip, is to spot treat anything that needs it, give them a good shake, and then air in a warm room/airing cupboard for a few days, before putting them away.
Incidentally, don’t store your Woof Bag in its compression sack, use something like an old pillow case for storage. Only use the compression sack when you actually need to.
When they actually do need a wash, please use a gentle, cold cycle – such as 30C with one line underneath and a slower spin speed – and Non Bio powder or liquid. DO NOT tumble dry, bleach or dry clean. Air dry it somewhere warm. They get hung over the stair banisters in our house………..