Debbie, some random suggestions.
Put Emily inside a carrier while you allow the shampoo to remain on her.
A teaspoon is 5 ml (because using a syringe is going to be better than dosing her from an actual spoon.)
YES, 4 weeks AT LEAST, for treatment of ringworm.
I would personally not bathe her quite that often. I found that itwas not necessary. Once per week should be fine.
You can (and I would recomment) putting an over-the-counter anti-fungal cream on her spots.
You can also give you cats Program pills (the flea control medicine) and it should help the others to NOT become infected. Buy the LARGE dog size. This is not a typo, I forget the weight range, but the medication needs to be several times the dosage used for fleas to affect ringworm, but it SHOULD work. And it is safe.
WASH, WASH, WASH. Never touch anything or anyone after you touch Emily until you wash. Your best bet is to wash in Betadine surgical scrub. Soap and water will not kill spores. TAKE OFF ANY JEWELRY! My white gold wedding ring turned yellow because I had not thought of that.
And remember, this too shall pass. I survived ringworm, Lut and others have survived it, and so shall you.
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