Have a 9 year old cow that has developed a chronic foot rot problem in her left hind foot. It started with a rock wedged deep between the toes; got it out, cleaned the infected area with betadine & Kopertox, LA300 & she was good to go. Except about 2 months later she started limping again & this time we took her to the vet. He found/trimmed dead tissue, another round of LA300 and Sustain III. All good. Until she started limping again. Took her back to the vet; trimmed more dead tissue & this time he gave her Draxxon with Sustain III because of the shorter withdrawal - he suggested we sell her because it had segued into chronic foot rot (also confirmed appx 60 days bred). As (bad) luck would have it, she was almost walking "normal" by the end of the withdrawal but the Sale Barn wasn't open for another 4 days, hubby in hospital, Sale Barn closed for Christmas & ice storm . . . . Basically, we missed our one chance because she started limping yet again the beginning of Jan & we have since been practicing benign neglect. Got her to the barn (prison) this morning and since she's now 5 months bred I'm thinking about Plan B, which is to treat her again, possibly using hoof blocks & moving her to another pasture that's relatively flat. So, has anyone ever used hoof blocks with any success? Or even just wrapping the foot? Anything else? I realize there is no magical cure & we are most likely going to have to slaughter her if she's not mobile enough to ever make it through the Sale Barn but hopeful we can at least get another calf out of her (because until now her lineage has been amazing).