The police use our strip for training the dogs so we have pretty much a 24x7 presence!
They do routine inquiries on the strips in our area just to keep themselves upto date on local goings on. They tell me there is nothing sinister in a visit (unless you have something to hide!). When they get to know the local guys it is a lot easier for them to deter the trouble makers who phone in and complain.
Personally I like the regular appearance of plod at our place as it adds a bit of security!