fish "eating" your feet?

The whole idea gives me the eebie jeebies. Ugh.
How can you sterilise a fishes mouth ?
I'd be sceptical of the tanks disinfection and sanitising - 'filtering' is not sterilising and sterilising at ultra high temps is the most effective method, instruments used on the feet need sterilising to 140 degrees celcius, minimum.
Being in the business of feet and skin this whole subject turns me right off ...... along with bare feet in changing rooms, swimming pools, saunas etc. etc.

 

It's the fish I feel sorry for. I see this as a form of animal cruelty.

 

At first i laughed at this but then i agreed with you, Clara.