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Anyone have a recommendation for an ongoing prophylaxis regimen, to prevent onychomycosis re-infection ?
This is after I chemically debrided / avulsed 3 toenails with Farber's urea based avulsion poultice (more details below).

A quick history :

2011

• ~100% infected toenails, all 10 toenails
• Terbinafine oral treatment
• Nail avulsion poultice using Dr. Eugene Farber's recipe, to remove dystrophic nail areas. (Dr. Farber, deceased, was Chair of Stanford Med. Derm)
• Result : 10 clear nails, for 10+ years

2022 - 2023

• Got reinfected on 3 toes, 70% distal, but not into the matrix.
• January ‘23 : applied Dr. Farber's nail avulsion poultice on the 3 toes
• - Success: 3 toe's nails avulsed (except for uninfected proximal 10-30% nail); no issues

My question :

Now, while the nails are growing back in, and in perpetuity : How would you prophylactically treat the nails to prevent re-infection ? I’m obviously vulnerable.
What I have access to :

• Terbinafine drops/liquid - every day / once a week / other ?
• Clotrimazole cream - every day / once a week / other ?
• Alcohol - every day / once a week / other ?
• Other ?

Reference :

• "Urea Ointment in the Nonsurgical Avulsion of Nail Dystrophies" - Cutis Journal,1980 Jun;25(6):609-12.
• (and I have the recipe and poultice bandaging/wrapping directions if anyone wants them)

 

I don't think there is any definitive or standardized advice on this.

I assume the best way would just be good foot hygiene practices and periodic application of a topical anti-fungal - I not sure which one would be better. As its for prevention,m a cheaper one?