Yep. Get a clean or new spray bottle, make sure its very clean inside if you are re-purposing a used one. Fill with warm water, and set on mist only. If you can get him outside his cage, a chair back makes a good shower stand. Spray the mist up so the tiny droplets fall on your 'keet. He may not like it much at first but do it like once a week, if not more. Parrots need showers or baths to keep feathers and skin in good condition. You might find he comes to love his showers - I know my Salty, an Amazon, hated them at first, now he goes into full blown birdy joy at shower time.