I don't know if these work, but for this price, I'm willing to keep some around for emergencies.
Sergeant's Whiff Fragrance Collar features patented technology that helps eliminate odors - even skunk. Keeps working for one month
• 2 Pack - you will receive 2 collars
•Fits all size dogs with up to a 28" neck (excess can be trimmed)
•Pleasant fresh scent
•Great for keeping pups fresh in between baths
•Keeps working for 1 month