Drug store only had it in a soap, will ask the vet tomorrow. Druggist was concerned that it didn't have the same foaming action that peroxide does as the abcess is thick like cottage cheese. So far haven't found any probiotics but the farm store is open tomorrow and will follow the lead of horse probiotics. Am using my husbands today as they are a powder and just sprinkled them on the wet dandelions. They at least contain 13 different probiotic bacteria. Warm tea bag on face acting well before cleaning. Seemed to loosen some of the pus and make it more priable to squeeze out. Then we were able to get the syringe in a little deeper and give it a good clean. Have given it 2 good cleans today and will do another before bed. Amount of pus the 2nd time was less than yesterday at vet but still a good amount coming out. Will be glad when the antibiotics take effect. Will ask vet tomorrow about at least X-raying so that we can rule out or confim tooth involvement. He is only 4 months old so tooth involvement seems so strange, am hoping more for spider or bug bit. So far the abcess appears to be the size of a marble, at the largest point of treating it. Yuck disqusting stuff.