Yes,but you must have at least 999 fast balls and level 100 pokemon.[all of them]
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Have a Fast Ball with you. This ball should catch at first time. If not, stack up on Ultras.
Using a master ball
first you go on the route that has the strange tree and spray it with the squirt bottle and it will attack you and use a fast ball to catch it and there you go a sudowoodo
the ultra ball is what i used to catch it...but you could use the master ball after you get it
There is no specific ball needed to catch Rotom, use whichever ball you want.