Did you call the police when they were spotted? You can call the non-emergency number at 1-248-857-7890 ext 7 for dispatch. You can explain what is happening , give as much detail as you can. All this you can do anonymously so you do not need to fear retribution. That house is a thorn in our neighborhoods side but unless they are caught in the act, we will not be rid of them! I did send an email to Sargeant Daves. By now , with everything that has gone on with them over the last year and a half, they should have a pretty long log of reports. They need everything reported to have enough evidence to start an investigation. They had an investigator out one day but I haven't seen one since.