People tend to air their crap on community listservs, but this weekend, one longtime Tenleytown resident elevated his grievances with a video assist.

“Your Dog Sh*t on my Lawn,” says the straightforward subject line from Marcello Muzzatti, who included a link to a 20-second YouTube video (posted above) of the incident in the email to the listserv. “and I caught you on video tape!” the body of the email says. “Hey *sshole! Its not bad enough that your dog sh*t on my lawn you looked around to see if anybody was watching … Enjoy and please let him know he is welcome to stop by and pick up his dog sh*t whenever he wants!”

The video depicts behavior that appears illegal under District law. Dog owners in D.C. can face fines ranging from $150 – $2,000 for neglecting to scoop the poop.

As is often the case on listservs, reactions to the message were mixed. “I don’t believe this warrants the obscene and rude email on this list serve,” says one response.

To that, another person fired back, “‘Obscene and rude’….??? Lady, it’s merely nature, not an XXX-rated movie. And tastefully shot above and from a distance. Develop a sense of humor!”

Another agreed that the video was funny. “Hilarious – it’s like America’s Funniest Home Videos meets the People’s Court!” says one listserv member before suggesting Muzzatti try using a sign as a further deterrent.

“I think I made some people happy, and I made some people spit their coffee out,” Muzzatti, a former D.C. police officer who retired in 2010 and now volunteers with the MPD air support unit, told DCist. He says he’s gotten mostly positive responses. “There are 800 people on the listserv, and four people send a note saying that they didn’t like it, but 796 people didn’t send a note, so they like what I did. Your four is nothing compared to the 796.”

The Tenleytown listserv, which began in 2002, sent out 541 messages in February, according to its Yahoo page.

Muzzatti bought his first security cameras last year after learning about a D.C. government rebate program for residents who purchase, install, and register them as part of the mayor’s “Safer, Stronger DC” agenda.

He says that since then, the cameras have helped identify suspects in a robbery, a fender bender, and have helped him get to the bottom of a number of number twos.

“The cameras have been a blast,” he says. Muzzatti began with three security cameras, but is about to install his sixth.

This isn’t the first time Muzzatti has turned to his neighborhood listserv to sniff out a culprit. As Chris McGraw pointed out on Twitter, Marcello sent out a similar message to the listserv over the summer.

“Dog crap on my lawn,” says the email to the Tenleytown list serv dated July 20, 2016. The body includes a video link and says:

I see you! Yup for the second time I have recorded your dog popping [sic] on my lawn! Now I have attached a video file. If anybody knows who this person is please let them know I have a plastic bag for them to pick up the dog crap they left behind! Cant wait to see you and explain what common courtesy is!

Muzzatti says he printed out a poster of the offending owner watching his dog as it pooped on his lawn, and left it right in the offending spot. A few days later, his wife found an apology note affixed to the door from the culprit.

Another time he found a steaming pile smack dab in the middle of his lawn, he was ready to circle the wagons. “I thought ‘Who does that?'” Footage from the security camera gave him his answer: it was a fox taking a bathroom break in the middle of chasing a bunny.

Muzzatti doesn’t have anything against dogs—he’s a dog owner himself. “The fact is that if I can pick up behind my dog, anyone else can.”

Muzzatti hasn’t found his latest culprit yet. Until he does, the pile of dog poop isn’t going anywhere. “It’s still on the lawn,” he says. “I’m still gonna print up a poster of them and put it on the lawn. I’ll leave it there. I don’t care.”

And what happens if he does catch the miscreant? “I wouldn’t turn them in,” he says. “You come to my house and say ‘I’m sorry, I didn’t mean to do that,’ I got you. Apologies go a long way.”