Sea-foam/powerboost foam, Alternative way to put it in Options

[TRD_GT]

Guys quick question,that sea foam spray stuff,in the uk its called powerboost foam,i've done that twice on my car n i've always used this is little spot just after the throttle body where theres a small thin hose which is just uncliped,its just on the top right of the throttle body,theres like some sort of little clip that is held tight around it to hold it in place..i wanted to know..is there an alternative location for injecting this stuff into the engine..? if so..where..? can i get a pic pointing it out..

thanx alot guys..