I haven’t read about the kind of soap one should use but, if it were me, I’d use surgical soap and definitely not a soap with perfumes or chemicals that can hurt a human if ingested. Soaps with povidone-iodine should be very safe. I’m not sure about soaps containing chlorhexidine gluconate. Both chemicals may be found in surgical soaps.
Just make your own soap. It’s easy as pie.
Thank you.