There was a product years ago called "deer catch" it was a grain based bait laced with diazepam, 5mg /kg seemed to be the effective dose. It takes several hours to take effect & much longer till the effects were gone, but there was little to nil capture myopathy. All you need now is a vet who will supervise the capture & prescribe a couple of thousand valium tablets? Simples! Ah, the good old days.