Question 1

How long does it take to start working?

Accepted Answer

At least a week before we noticed any visible signs of "friendliness." That may have been wishful thinking.  Thus was also during the winter months when our windows were closed. In this hot summer when windows are open most of the day, I would guess it will take longer. Advice given to us was to give it four weeks. If no improvement, then it probably wasn't going to work. Thankfully it did. Please don't expect overnight Improvement like some say happened.

Question 2

can you plug this refill into the diffuser that you use for the original feliway refill?

Accepted Answer

I bought plug and refill to be on safe side . It does appear to be different so not sure on correct answer

Question 3

What is best for conflict between cats in the home, feliway friends or feliway optimum?

Accepted Answer

The one that has been around for many years worked well in most cases. I think that ongoing research has tweaked the actual synthetic pheromone.
However a couple of points: cats are cats and in some cases they just won't get on. That is not common and from experience in my veterinary practice most clients got an improvement and some complete bliss, but if finances allow then use it for life. Minimum 3 months. 
The biggest reason that aggression continues is because the underlying cause hasn't been found. There may be a cat they see outside and that brings out pecking order anxiety taken out on the other indoor cats. Don't forget that cats, unlike dogs (and humans)  don't have a set pecking order for life and will naturally challenge the others to become top cat for a while.
Always see your house from their prospective: draw a floor plan and mark where you see each cat. One might use one side of the stairs, never the other; one sofa, or the floor near it. Only by working out micro-zones can you then make sure litter trays and food bowls are in each cats zone, not all in one place...the kitchen is only a kitchen to humans! And most importantly,  if you don't draw a plan you might put the Feliway in an area deep inside one cats territory and that won't help.

Question 4

Had this for a couple of days now and the unit gets extremely hot. Is this normal?

Accepted Answer

Dear Customer For the Pheromones to be released, you will find that the diffuser plug heats up slightly, however if the temperture of the plug is causing consern we advise you to stop using it and contact the manufacture. Ceva are happy to advise further, you can contact Ceva on 01494 781510 Kind regards Customer Services Department - Mr Pets Ltd

ASIN	B01ETO3PFE
Allergen Information	Allergen-Free
Batteries Included	No
Batteries required	No
Best Sellers Rank	511 in Pet Supplies ( See Top 100 in Pet Supplies ) 7 in Relaxants & Anxiety Relief for Cats
Breed Recommendation	All Breed Sizes
Care Instructions	Keep in a Dry Place
Closure	Breakaway
Colour	White
Customer Reviews	4.1 4.1 out of 5 stars (8,743)
Date First Available	26 April 2016
EU Energy Efficiency Label	A
Item Form	Pellet
Item Weight	100 g
Item model number	D89412C
Number of Items	1
Pet Life Stage	Adult
Pet Type	Cat
Product Dimensions	12.7 x 11.8 x 7 cm; 100 g
Quantity	1
Size	48 ml (Pack of 1)
Special features	Automatic, Easy to Use, Veterinary Approved
Specific Uses	Aggression Training, Behavioural Training, Daily Use, Suitable for Adult pets
Volume	48 Millilitres

Feliway Friends Cat Calming Plug-In Pheromone Diffuser Starter Kit

Description

Specifications

Common Questions