Hamilton Beach air purifier for pet odor. We also use in clothes closet. Dimensions = 8"x8"x8". Needs replacement filters. Not expensive. You can order them here:
https://www.amazon.com/Hamilton-Beach-Replacement-Filter-04234G/dp/B003RIUB...
Pet Odor Filter (Groton near center)
This offer has been gifted to someone and is no longer available.