Does this work better than the Classic? I feel like my cat is getting used to the Classic and it doesn’t calm him as much as it used to.

I have used the multi- cat on & off for years with excellent results, but I wanted to give the optimum. Not sure if it's necessarily better (both are equally effective for us) but it definitely works faster. For your situation, switching to a different formula is worth a shot.

Can the same diffuser i have for the multi cat be used for this?

The instructions actually say to not use another brands diffuser for the refills, and not to use another brands refills in the diffuser. It does not specifically say to not use another one of their own diffusers. I will say I used my old multi cat diffuser and it was fine and worked well.

Can this be plugged in 220v or just 110v?

I believe it would only be safe to use in 110 volt.

Can you use this in a dog friendly home with two cats?

You may want to contact Feliway directly for the best answer. That said, the cat pheromones shouldn't effect your dog. If your dog is a chewer I recommend plugging in somewhere the dog can't reach it since it's ball shaped (or train the dog that it's strictly off limits).

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Optimum Cat Calming Pheromone Diffuser Refill - 1 Pack | Advanced Support to Help Reduce Urine Spraying, Scratching, Fighting & Hiding Due to Stress, 30 Day Supply

Product ID: 337668665

Details

Brand
FELIWAY
Color
Translucent
Material
Plastic
Recommended Uses For Product
Home
Scent
Unscented

⏳30-day continuous calming

🏠700 sq ft coverage

🐾77% less urine spraying

€ 37.70

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Description

🐱✨ Turn your home into a stress-free cat haven—because calm cats are happy cats!

SAFE EASY - Non-toxic, safe around cats, kittens, people, and other pets; simple plug-in use
ALL DAY CALM - Provides 24/7 non-sedating support for up to 30 days per refill
WIDE COVERAGE - Effective in spaces up to 700 square feet—perfect for modern living
HARMONY AT HOME - Promotes peaceful multi-cat interactions with 72% less tension
STRESS FREE SANCTUARY - Patented pheromone formula reduces stress signs like spraying & scratching

FELIWAY Optimum Cat Calming Pheromone Diffuser Refill delivers up to 30 days of continuous, non-sedating stress relief for cats. Covering areas up to 700 sq ft, it reduces urine spraying by 77% and eases multi-cat tension by 72%, promoting harmony and calm in your home. Safe for all life stages and easy to use, it’s the ultimate solution for managing stress-related cat behaviors.

Specifications

ASIN	B09885JMHL
ASIN	B09885JMHL
Age Range Description	All Life Stages
Best Sellers Rank	#283 in Pet Supplies ( See Top 100 in Pet Supplies ) #1 in Cat Relaxants
Brand Name	FELIWAY
Color	Translucent
Customer Reviews	4.4 4.4 out of 5 stars (13,760)
Date First Available	June 29, 2021
Date First Available	June 29, 2021
Directions	FELIWAY Optimum refills provide calming pheromones continually for up to 30 days in a 700 square foot area. We recommend using an additional diffuser if the room is bigger than 700 square feet. We recommend plugging in the FELIWAY Optimum diffuser in the room where you cat spends the most time. Try not to plug the diffuser under items (e.g. shelves) or close to objects (e.g. behind curtain or door…
Included Components	Refill vial
Item Dimensions LxWxH	33.37 x 33.37 x 33.37 inches
Item Package Dimensions L x W x H	4.61 x 2.05 x 2.01 inches
Item Weight	1.6 ounces
Item model number	D92120K
Item model number	D92120K
Manufacturer	Feliway
Manufacturer	Feliway
Material	Plastic
Model Name	Feliway Optimum
Number of Items	1
Product Dimensions	33.37 x 33.37 x 33.37 inches; 1.6 ounces
Size	1 pack
Specific Uses for Product	Behavior
Target Audience Keyword	cats, house-cats

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