Air fresheners for the home have come a long way from the first plug ins. We use one by Febreeze, called Febreeze Noticeables. They have several alternating scents to chose from, including one specifically for pet odors, and because the scents are always alternating they always smell fresh and new. It also depends on the setting you chose, how long they last. High ofcourse gets used up quicker and low or medium, lasting longer. Generally you will get a good 30 days out of a unit.
You can get two refills for under $8.00 or a single refill for around $5.00, and around the holidays they have special scents, like right now I noticed they had Fall Harvest and Pumpkin Spice available, yummy!!
I put these in both boys bedrooms, in both bathrooms and that keeps our home fresh smelling all day long, all month long even with our pets.
I am very pleased with Febreeze and will continue to use their Noticeable.