a guide is 1 drop dose per 25 pounds or 10Kg of animal
I however suggest this as a start till other pet owners chime in with their experience.
Activate 3-5 drops and put this in the water bowl. The water bowl CAN NOT be Metal. MMS will only last 90 minutes in an open bowl so you can add 3 active drops per hour is my method.
You could squirt with syringe and you can apply topically. Te nose is sensitive.
I think dabbing CDS with cotton tip may be the answer topically.
Please read some of the dog threads currently running. The small dogs weigh about same as an older full size cat and many of the methods are good for many animals.
Jeffers, Blessed and Bonnie have a good conversation on healing their dogs over a couple/few threads.