what are the directions to set it up to use?

We thank you for your inquiry. You will want to first locate the fly source outside. You will then turn the plastic cap counterclockwise and pull to open. You will want to fill the back with water until it reaches the full line. Then hang the trap outdoors near the fly source. The attractant in the trap will dissolve in the water. You will need to replace this after 30 days or when the trap becomes full or the contents dried out. If you have any further questions, please call us at 1-800-917-5438 or email us at youropinioncounts@spectrumbrands.com so that we may better assist you.