The best and safest, most productive, best maintenance anthelmintic is Safeguard brand Fenbendazole 10% from Jeffers online or any feed and seed, get the tube of paste 25 grams. one tube is a one week supply, roughly two turns on the dialer limiter that's on the plunger, do this daily for 4 mths or stop and restart if herxheimer response is too stressful. This method doesn't do any harm to the body's organs but other methods have been reporting back too much stress to the kidneys.I have gone through this process with more sufferers than anyone would ever believe.