Help, my duck has an infection in her leg

[neetabeamie]

I discovered a bumble in my ducks foot a few days ago. I soaked it in Epsomsalt, dried it then applied clear iodine. I was able to remove the bumble but the infection has stayed. I have been soaking her foot in a worm bath tub every day. yesterday I put a Epsom salt poultice on it last night after letting her soak in the bath for about an hour. I wrapped her foot up with the epsom salt poultice
My question is this: if this dose not get rid of the infection what should be my next step?

 

[chickens really]

A vet and a shot of antibiotics....

 

[Tlmcq]

Bumbles can take a long time to heal but if infection isn't clearing and you have been soaking and keeping clean it needs antibiotics. Here's a link on treatments and making sure you got the bumble and stringy infection out also.
http://www.fresheggsdaily.com/2012/03/bumblefoot.html?m=1