I seafoam at 3am so i have no problems with neighbours.
I use it in the gas ,intake and oil it is not for the tranny as it would rip apart the clutches and seals. New Toyota fluid is great at cleaning dirt when it is changed. That is why i use an inline filter to catch debris that the oem filter can't. I am waiting for an order of 10 so i can replace my inline one that is now full and add one to my power steering line as well once i flush it soon also.
I like to use a line infront of the throttle body to ingest the fluid to clean all of the intake not just some of it .
I did a firends IS300 and when it waw taken apart by a Japanese senoir Lexus tech he had never seen such a clean engine in his life.