Certainly. The main elements of our HACCP program travel all through our conveyances, through the cleanliness of our conveyances or trailers and our straight trucks. That also pertains to the sites where we cross-dock freight. Many of our customers, I think, have the understanding with the freight that at times when we're in the LTL business, the freight that we pick up on trailer A we might not necessarily deliver with trailer A. With our full truckload division, that would be the case.
But they are putting it on a trailer that has to go across a cross-dock facility or a warehouse, so our sanitation, pest control, cleanliness, and training of employees in personal hygiene and also in health and safety pertain to this program. On construction of our trailers, all of our trailers have aluminum-ribbed floors and Bullitex walls. There is no wood in the containers. They're all reefered units and dual-temp trailers. Our trailers can maintain two temperatures, a fresh and a frozen, within the one unit.
All those things pertain to it. I guess it would the building and all of our conveyances, along with our staff, through the pest control, the conveyance cleaning, and the regular monitoring of this. We do self-audits once a year and we're also subjected to an audit by Kasar Canada. That usually keeps me very busy.