Please let us reassure you that we are not selling expired products on our website. We receive our inventory direct from the manufacturer and the Refills in particular have a very long shelf life.
Please consider that the life cycle of a moth means that there will be periods of time where there may not be many (or any) adult males to be attracted to your traps! Please leave the refills in places for the full three months to make sure you have monitoring and protection in place.
With regards to shipping; we offer a flat rate shipping for orders of any value and size.