Toyota Repair: 2005 Toyota Sienna V6 Auto 29000 miles- Leaking oil, siennas, toyota sienna

Question
My Sienna has been leaking oil. I took it to my local dealership and they could not find a leak. They put a dye in the oil and said it was my valve cover and gasket. They installed new ones.
I still have oil on my garage floor and they have looked at it three more times with no fixes. They just tell me it is left over oil that had pooled on my transmission and they cleaned it off. But I still have oil leaking on my garage floor.  

Answer
Don't think I can be of much help with this other than to either keep taking it back to the dealer or go try another dealer, it's still under warranty and they are obligated to take care of the problem, there are no chroncic oil leaking problems on the siennas so I'm not sure how to help without actually looking at it myself. If the leak persists and there is no help from the dealers then you can call the 800 customer assistance number.