My sinuses must be opening up...or either the "Renuzit" plug-in refills must be working well...house smells "fresh"..I have "Glade" plug-ins, but found 5-packs of the "Renuzit" refills, which said on the box they fit the Glade outlets, for less than $2.50 earlier today at "Fred's"...the "Glade" brand is over $3 for a three pack...