ATLANTA, March 20, 2013 /PRNewswire/ -- Pest control leader Orkin wants consumers to be on the lookout for spring pests, now that the weather is beginning to break across the country. Ants, roaches, spiders and other pests that overwinter will likely start to become more active in the next few weeks. "Now that spring has officially begun, and once temperatures are consistently above 70 degrees, pests will begin making their way out in full force," said Matt Peterson, Orkin's Southeast Division technical services manager. "Insects stay in a hibernation-like state during the winter since cold temperatures slow down their metabolism and reproduction cycles, but as the weather begins to warm, their systems start moving again." AntsMany homeowners consider ants to be one of the most serious pests. There are more than 10,000 species worldwide, and about 50 of those in the United States. Ants can infest homes by coming in through the tiniest of cracks, and controlling them is difficult because they leave an invisible pheromone trail for others to follow once they find a food source. There are three main categories of ants: nuisance, health (such as fire ants) and structural (such as carpenter ants). "Another common sign in the spring is a group of ants with wings which can be confused with termite swarms," said Peterson. "It's a common misconception because of their similar appearance. Correctly identifying an ant infestation determines the best treatment method." RoachesIn addition to entering a home through cracks and crevices, vents and pipes, other items like grocery bags, boxes and purses can transport cockroaches and their eggs. Because cockroaches are nocturnal, if you see one during the day, that means they were likely forced out by overcrowding—a possible sign of a severe infestation. Cockroaches are filthy pests. They pick up germs on their legs and bodies and can spread disease, contaminate food and cause allergies and asthma. According to the World Health Organization (WHO), roaches can also carry organisms that cause diarrhea, dysentery, cholera, typhoid fever and viral diseases.