remove it ,put it in an old oil drum and set fire to it with a splash diesel , told it works ,and a hell of alot cheaper.
That cleaner as far as I know doesn't remove the Ash which is the reason for dpfs blocking.
DPFS do block up with soot particulates which these do help to clear but you'll have to bottom out the reason for the filter blocking in the first place.
Mitsubishi do advise on removing their dpfs and steam cleaning them backwards to remove excessive soot before carrying out a forced regeneration.
It’s not blocked, just thought it would be a good idea to put cleaner through it while I was servicing it