Adult ticks have 4 pairs of legs and the body is not divided or constricted. Ticks have a similar shape to mites but they are considerable larger, usually 3mm or more in length and their body is leathery.
Unlike mites that are free living, ticks are ectoparasites on mammals, birds, and reptiles. Ticks often feed on small mammals like field mice and can be found in wooded areas and fields. The exception to this is the dog tick which is usually found in suburban areas and their main host is dogs. Dog ticks are one of the only ticks you can find that infest homes. If your home borders woodland, fields, or is prone to having small mammals you should be more cautious and think about contracting a competent pest management company to provide proactive treatments.