The hippogriff can hear the pony’s voice from inside “Coming!” and a few seconds later the door opens “Oh. Hey there Vindicar.”
"Well, that’s the price for the armor not falling off in the middle of combat," Vindicar jokes, approaching the tank Pewny seem to have chosen for the test. "First try with just hot water, right? No sense in wasting soap until most dirt is taken care of."
"Fair enough." He chuckles again, then nods at the question "Yeah, just throw it in there and do what I said"
Birdpony does as he’s told, and starts shaking the armor underwater, making quite a lot of noise in the process. It quickly proves to be a tiring thing to do while balancing on hind legs, so Vindicar has to aid himself with wings, spreading them wide to keep balance.
"Just… like… that…"
“Alright, alright, that’s enough, if you were to shake it like that for like half an hour non-stop then maaaaybe it would clean up fully. Also, a note, use something of lower height, giving you a chance to sit while doing this.”