We have had ADT for 19 years with no problems at all. We've accidentally set it off about four times without being able to de-activate it in time and ADT has called within about three minutes. I set it off about a month ago; when they called the line was not very clear (our end), and officers were at our front door five minutes later.

We also have a small dog, 1/2 maltese, 1/2 pom, who barks like crazy at every unknown sound (and everything else). In reality, he's probably all we need lol!