BuzzFeed editor Jenae Sitzes says, "I picked this air purifier up a couple years ago to help manage the ~smell~ that sometimes wafts from my cats' litter box when it starts to get full, and to help keep my NYC apartment air cleaner in general. I'm also (lol) extremely allergic to cats, and though I get allergy shots for this, it's also nice to help cut down on the pet dander for myself and any visitors with allergies. This thing makes a DIFFERENCE. It cuts down on any noticeable smell from the cats, my air feels cleaner, and my allergies are usually nonexistent in the apartment. Oh, and it's fairly quiet — it basically functions as white noise, which can be handy if you run this at night in the bedroom too."

Depending on your usage and environment, it's recommended to replace the filter every 3–6 months — replacements are available on Amazon. (You can see the difference between my old filter and a new replacement one above!) Note: Be sure to take the plastic off the filter before placing it in the unit!

Promising review: "My boyfriend is very allergic to anything with fur, but things with fur are things I like to keep around haha! I have three dogs and a cat, and it definitely helps with his allergies. He hasn't needed to take a Claritin since I got it. Plus, at this price, I was able to get the machine and two replacement filters for the price of just the machine from a competitor. I plan on getting a couple more to put right next to the litter boxes, since they also help with the smell! Just a heads up, you can turn the light off. I like to keep it on just because it is so quiet, I'm not sure I would know it's on otherwise." —Ashley G

Price: $45.30 (typically $79.96; available in two colors)

Alternate deal! It's slightly more expensive, but if a Levoit air purifier has been on your wish list, you can snag one for 23% off for Prime Day ($68.94, the lowest price it goes for).