According to a report from the Daily Mail, this situation has led to a decline in the club's food hygiene rating, which now stands at two stars out of a possible five.
The club is also deliberating on the future of Old Trafford, weighing the options of redeveloping the existing stadium or constructing a new one.
“Manchester United implements a robust pest-control system throughout Old Trafford,” a club spokesperson told the Mail
“Multiple weekly checks are made in all catering areas and stringent measures are taken to ensure levels of hygiene and cleanliness are high wherever food is stored, prepared and served.
“If incidences of this nature do occur at the stadium, immediate and appropriate action is taken.”
A Trafford Council spokesperson said: “Our environmental health officers gave a food hygiene rating of two following a routine visit.
“We are now working closely with Manchester United to ensure it complies with the rating and carries out the necessary improvements.”
United, who dismissed manager Erik ten Hag earlier this season, experienced a 3-0 loss at home against Bournemouth on Sunday, a setback that positioned the former Premier League champions in a disappointing 13th place in the standings.
During the post-match press conference with new manager Ruben Amorim, a leak from the ceiling in the media conference room at Old Trafford caused water to drip onto the front row of reporters.