There's got to be a better way (to clean a dishwasher spray arm)

I just spent forty minutes with tweezers and blasting hot water trying to clean out the upper spray arm on my 3 year old Maytag dishwasher. I'm hoping someone out here has a 'life hack' that means I never have to do it again.

This is a six month old spray arm. I replaced the original because of the same problem: food particles are blocking the holes. I don't want to replace the spray arm every few months.

Googling this give me twenty links about using a toothpick to clear the holes and doing a vinegar soak. THIS IS INEFFECTIVE. Those tips are presumably for hard water / mineral scaling. That is not my problem. A toothpick just pokes the particles back into the arm and they clog up again as soon as water is run through them. Vinegar smells nice but doesn't dissolve the particles.

I've got some organic matter that is like a thin reddish kelp that breaks apart if I grab with tweezers too hard. It's clearly plugging the holes. I've got to shoot water into the spray arm to get the kelp visible in a hole, then *gently* pick it out with tweezers. It takes a few tries as the stuff breaks apart (but not so small it comes through the hole). I've picked out 50 pieces or so. It's ridiculous.

Please help. Tell me how to do this right.