Yes there is a certain time of year that each type should be used. I would go to Deworming Program
Paste Wormer Rotation Schedule and take a look at that. Keep in mind that different areas have different worming needs. In Southern California, horses that have been in So Cal for a while generally have few problems with worms because we generally don't have grass pastures, and our seasons are very different from places in the mid-west for example. I would talk with your veterinarian as well, or do more research online for your specific area, and see when what worms are active.