Hope you can help on this one or offer some advice.  i rescued two shih tzus and when I got them they were in an awful state.  I have over the last few months been getting them back on trace however there fur around there feet are still yellow or where they where soaked in urine!  Is there any way of getting this back to white or is it just the case of regulaur bathing and waiting till it grows out fully?

You could trim the fur off the feet, that way it would grow back clean :) or you could wait for it to grow out :)