Every set of gear is supplied with cleaning instructions....But the best option is through Lion. They professionally launder, repair if needed and certify fit for purpose.
I think I heard there will be regional spares, if there are delays getting your personal kit returned. Will have to verify that though.
Keep in mind the purpose of PBI. It is primarily for offensive structural fire fighting, it is not a multi purpose wear all day garment.
Has anyone seen a written a policy saying you can't take a second kit in a bag? I have been carrying a kit bag for years!!!!! Especially now with many dual cab trucks the gear can be on the back deck with the esky, water and ration pack. Until there is a written policy do what CFS has always done. Improvise and adapt... Sounds like a crank statement but it's true