Povidone iodine is available at walmart. You need to dilute it according to the instuction. (Do NOT use straight out of the bottle!)
https://www.walmart.com/ip/Equate-First-Aid-Iodine-Antiseptic-Liquid-8-fl-oz/236247392?athcpid=236247392&athpgid=AthenaItempage&athcgid=null&athznid=si&athieid=v0&athstid=CS004&athguid=oQHetuNYtMaf097Z01QsrsfFltuXChxPUNyh&athancid=null&athena=true
Thx!