D.A.P. helps stop or prevent fear and stress related signs in puppies and adult dogs. D.A.P. mimics the properties of the natural appeasing pheramone from the lactating bitch; the function of which is to reassure the offspring. D.A.P. is delivered through an easy to use plug in the diffuser. It lasts for 4 weeks and is active from 50 to 70 sq.m. Please note: It is only compatible with the UK power supply. For use in other countries you may require an adaptor.