Getting rims powder coated

I would not powder coat wheels again. I did it on some AL wheels and had many issues, chipping, buildup in the wrong places, cracking 4 years later.
I talked with Leanna about powder coating some old five spoke aluminum wheels i have, and she flat-out wont do used aluminum wheels (new, never mounted, that's different. )
How she explained it, she can get used steel wheels clean enough to powder coat, but old aluminum wheels absorb soaps, other stuff (i forgot exactly what she mentioned) and tire dressing that she cant get out of the aluminum, without using a mega-expensive, mega-toxic cleaning agent, that she refuses to use.
I can't say i blame her.