I just thought ii would share this as it may help anyone else who has a dog suffering from interdigital cysts. My 11 year old spaniel suffers regularly with these and when she first started getting them I was taking her to the vets and getting a course of antibiotics. The vets did advice me that she would always suffer from these now and it is a case of management rather then cure.

When I notice one appearing I wash her foot in malaseb shampoo (horrible stuff but it works) and apply sudocream.  I wash the foot once a day for a few days but keep applying the sudocream until the cysts dry up completely.  This to me is so much better than keep giving her antibiotics.

My make BT suffers with these and we wash in hibiscrub and use sudocrem. We never get his feet completely white, but he is retired from showing now and its much better than lots of antibiotics. We also add 2 anti histamines to his food which we find helps a lot.

I had a boxer who got these .. I 'tubbed' ber feet in warm salt water regularily but especially when one was starting. Nearly always worked as only once did she need ABs most likely because I missed it to begin with.

I have the same problem with my BT. She has an allergy, which we are yet to establish to what, and she regularly gets very itchy front feet and one of her back feet. We have tried everything and are now looking at allergy testing to try and work out what it is. I have dropped cereal from her diet, she is feed BARF, I bathe them, she has had anti-biotics, steroids, everything but nothing works for more than a few weeks. So frustrating as she really chews them when they get bad and it must drive her mental. Hopefully the allergy testing will help us to help her.