Bulwark Exterminating made it's first appearance ever in the PCT Top 100 this year ranking #31. But being in the top 100 doesn't make Bulwark a big company. Bulwark is still a little fish in a big pond. Dwarfed in size compared to Orkin and Terminix, Bulwark is still small enough to care, but big enough to do it right. Here is a visual break down of other stats from PCT's Top 100 pest control servicelist.