"Eco-goats" eat their way through Congressional Cemetery, removing vegetation and invasive species without the use of pesticides. (2013 Photo by Fritz Hahn/The Washington Post)

The world's most adorable lawn mowers are coming back to Southeast Washington.

Historic Congressional Cemetery, which employed a herd of goats to remove poison ivy, honeysuckle and other vines from an acre of woods in August 2013, announced today that 30 goats would arrive on August 6 to eat their way through a different acre of land. "It's a very similar area," says cemetery program director Lauren Maloy. "There's a lot more for them to focus on – a lot of invasive species, like poison ivy and kudzu, that are threatening the trees."

The goats, which come from Prosperity Farms in southern Maryland, "might be here for up to a couple of weeks," Maloy says, depending on how quickly they devour the plants in the designated area, which is located at the eastern end of the 207-year-old cemetery.

Goats proved to be a popular attraction last time, with parents bringing their children to watch the animals work. (They even had their own hashtag: #goatmower.) Maloy expects a similar response this time, and is even talking about planning some special events, including a happy hour, to coincide with the goats' visit.

Admission is free, and the cemetery is open daily from dawn to dusk. After you've checked out the goats, you might want to also take one of the cemetery's free self-guided walking tours, which cover a range of topics from Native American chiefs to Washington brewers.

Congressional Cemetery, 1801 E St. SE. (Entrance on Potomac Avenue SE.) 202-543-0539. www.congressionalcemetery.org.