A Delouser and Wormer All In One Bottle! With NEOBICIDE you can eradicate and control more species of mites and lice at more different stages of development while worming at the same time. Neobicide is a systemic poision. In other words it works throughout the whole system at the same time! Its duration time in the body is from 60 to 90 days. This long acting parasiticide takes a load off of your mind and your pocket book. It is effect against all blood sucking parasites. It will not kill tapeworms because tapeworms are not blood suckers - It is primarily as a general delousing and worming agent.