Carson Benge utilized a time-tested method for breaking his latest slump: He eliminated his mustache before Wednesday’s game.

“I really haven’t been getting a ton of hits, so I just shaved it off and it worked,” Benge said.

The rookie outfielder returned to the form of May flowers — after April showers to begin his major league career — with two key RBI hits that helped lead the Mets’ 4-2 victory over the Reds at Citi Field.

Benge delivered RBI singles in the fifth and seventh innings on a night the Mets assembled a strong bullpen performance in ending a five-game losing streak.

After scoring two runs or fewer in six straight games — the first time in a decade they had struggled to that extent — the Mets had a decent night offensively to avoid a second straight series sweep.

Benge was in a 1-for-20 rut before he stroked an RBI single in the fifth that gave the Mets a 3-1 lead. Two innings later, he singled in another run, giving the Mets their final margin of victory.

“[Benge] is always aggressive and has a really good swing, and he knows it,” Juan Soto said. “He’s squaring balls most of the time, and that is really cool to see.”

Before his slump, the 23-year-old outfielder was thriving, with a .919 OPS over 17 games, a stretch in which the Mets went 11-6.

“The one thing I like about him is you can never really tell whether he is 0-for-8 the past couple of days or he’s coming off a couple of games where he hit a walk-off or had a game like this,” manager Carlos Mendoza said. “He’s going to show up the next day and be the same person and give you his best. It’s pretty impressive for a player his age.”   

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Devin Williams infused drama by walking the bases loaded in the ninth before escaping with the save. Williams struck out Dane Myers and Blake Dunn in succession to end it. The Reds left 17 runners on base.    

Jonah Tong created plenty of traffic in his bulk relief appearance but lived to tell the tale.

The right-hander surrendered three hits and four walks over 3 ²/₃ innings behind opener Huascar Brazobán, but only an unearned run scored on his watch.

It was a second straight effective bullpen outing for Tong, who pitched three hitless, shutout innings in Miami last Friday upon his recall to the Mets.

Soto’s first-inning homer against Andrew Abbott gave the Mets their initial run. The blast was Soto’s eighth in 12 games and second in as many days.

“I keep thinking to do damage every time, but the difference is the results,” Soto said. “I just feel good. I have been seeing the ball well and swinging the bat well. Just do damage whenever I can.”

Eric Wagaman, who started at DH to give the Mets an extra right-handed bat in the lineup, homered with two outs in the second to give the Mets a 2-0 lead. Wagaman hit nine homers in a full season for the Marlins last year.

Tong’s throwing error on Elly De La Cruz’s grounder leading off the third led to the Reds scoring an unearned run. Eugenio Suárez drew a two-out walk in the inning, and Nathaniel Lowe’s RBI single sliced the Mets’ lead to 2-1.

De La Cruz’s error with two outs in the bottom of the inning helped the Mets extend their lead with an unearned run. Luis Torrens and Benge singled in succession, with the latter hit giving the Mets a 3-1 lead.

Sal Stewart’s infield single in the sixth pulled the Reds to within 3-2.

Myers allowed a leadoff double to Tyler Stephenson, and Blake Dunn singled before Brooks Raley plunked De La Cruz. With two outs, Stewart’s roller to third brought in the run.

A.J. Ewing’s diving catch in center on Dane Myers’ line drive ended the top of the seventh with the tying run on first base following a walk to Stephenson.

Benge’s RBI single in the seventh gave the Mets a 4-2 cushion.

Jared Young’s pinch-hit single leading off started the rally. He reached second on a wild pitch.

“I am just trying to stay short,” Benge said, referring to his swing on high fastballs. “Just put it in play and not try to do too much, and things have been working out.”