Until fairly recently many home pest control problems were either far too difficult or far too dangerous for home owners to deal with themselves. Many control procedures involved the use of highly toxic insecticides or required specialized application equipment.
However, nowadays the highly toxic, broad spectrum insecticides have been replaced by lower toxicity materials that also more specifically target particular pests. Traps and bait products are available that replace complicated and expensive spray applications. Also, you can now purchase many of these products and equipment online. The result is you can do a lot of your own pest control both safely and effectively with a little help.
The drawbacks to this approach, however, are many: treatments often do not last very long, and require a lot of reading and learning on your part to make sure you are treating safely and legally. Often times it is far more cheaper and easier to just contact a pest control company and let them handle the issue.