Why take the cat to the Vet.? Be careful with preparations too, I bought a flea zapper once the initial treatment had been done. Very therapeutic. It was supposed to buzz on contact with a flea

In my opinion and from experience you WILL NOT have noticed a change in itchyness yet because any irritation isn't out of your dog's system. It may take 5-10 days before a change in diet makes a difference! so go back to basics - chicken/mince: raw if possible: veg., no rice or pasta, water only. Do not have any boosters done on any of the animals because pets can be allergic to them

...... cut out as much chemical intervention once this treatment has been given. Otherwise you won't know what, if anything, is working - skin scrape is essential because mange mite cannot be seen by the naked eye.
What colour is Daisy? Wish I lived nearer, I could help search for runners
