Arrived quickly...i had been using the Feliway starter pack as one of my cats in particular has been fighting with her sisters...in particular one of my most timid cats..although she has never done this before...she is also restless...i was adviced to try Feliway Friends as i was told this is particularly for fighting amongst each other...its probably too early to tell if its made any difference...as i believe it takes up to a week to work...i just hope it works...but good experience with this company...and will be buying regularly from here if it works...thks.