Percy's neatly placed robes were proabably the neatest thing IN the haphazard, flat. Fred and George knew where everything was. They just didn't actually keep things in any recognizable order - unlike their shop, which was actually very well organized, once one could see past the clutter.
"Welcome to the same page the rest of us have been on for a bloody year, Perce," George told Percy dryly, watching his brother cook. "Making a lot of meals for one at home, aren't you? You need a shag," he informed him.
George crossed his arms over his chest. "Our help to do what?" He knew what Percy had in mind, since Fred had put it there. HE wasn't sure what they could do to help, though. It wasn't like the Ministry had any love for the two of them.