I signed a one-year contract with Orkin for them to provide quarterly preventive pest control for mice I had living in my house. The mice did seem to disappear after a couple months.
However, after the first couple visits, in which Orkin called us to set the appt, they stopped calling us, and instead came every couple months, always in the day when we were not home. They would leave a notice on our door handle saying they had sprayed outside the perimeter of the house. We did not notice any evidence of pests in the house so we continued to pay their hefty charges.
Then one weekday, Orkin left another notice on my door saying they had sprayed the perimeter. Problem was, I was home the entire day, and at the time on the notice, I was in the backyard working on my garden, so there was absolutely no way the Orkin rep. could have sprayed the perimeter of the house.
We called Orkin, and told them we would not be paying the latest bill, because they weren't actually providing us with any service. The rep at Orkin then had the gall to tell me that they had a work order signed by someone in the house that proved that not only did they spray the outside, but also the inside of the house! After 3 or 4 phone calls they finally admitted that they were mistaken about the "signed" form, and did not charge us.
And now, not a month later, we have mice in the house again.
So beware: while Orkin may be effective in pest control, that's only when they actually do what they are paid for!
If you do decide to go with Orkin, do not accept these fake service appointments - insist that they call to schedule an appointment when you will be there. Otherwise they claim to provide service, but in reality, they just fill out the form and stick it on your doorknob.