About 10 "non-sponsored sleepovers" have been logged across the world by the Swedish  furniture giant this year.
In the past, people have hidden themselves in stores in the US, Canada, UK, Belgium, Netherlands, Japan, Australia and Poland.
Most recently, two 14-year-old girls were caught after spending the night at the branch in Jonkoping in Sweden.
The craze appears to have been started by two Belgian YouTubers in August.
Their video, which has had 1.7 million views, documents their exploits - including jumping on beds - after they hid in a wardrobe for three hours to avoid detection.
Unlike the 14-year-old girls, however, they were not caught and walked out after spending another few hours in the wardrobes waiting for the store to open.
Ikea has decided not to formally charge the Jonkoping teenagers because of their young age, but two girls who were caught in Malmo, Sweden, in October were not so lucky.
According to Sydsvenskan, the 15-year-olds had been too scared of setting off the alarm to leave the cupboards they were hiding in, and were reported to police for trespassing when they were discovered in the morning.
An Ikea UK spokesperson told the BBC: "We appreciate that people are interested in Ikea and want to create fun experiences. However, the safety and security of our co-workers and customers is our highest priority and that's why we do not allow sleepovers in our stores."
A Swedish spokesman added: "Maybe needless to say that the fun in it is overrated. A long night of sitting still, only to then risk getting into trouble with the law."
Ikea owns and operates nearly 400 stores in almost 50 nations.

Sadiq Khan said the online firm had refused to take down the knife videos that were first reported in December.
Mr Khan said the videos, showing recognisable London locations, "were a shocking example of the glamorisation of gang culture".
YouTube said it could not comment on individual cases but said it was in contact with the police on this issue.
The videos, which have been viewed more than 356,000 times, shows gangs threatening rivals with a "Rambo knife" while others make shooting hand signals to a soundtrack of violent rap.
A YouTube spokesperson said the site prohibits videos "that are abusive or that promote violence."
"We work closely with organisations like the Metropolitan police to understand local context and specifically, so that we can understand where artistic expression escalates into real threats."
Gun and knife crime in the capital have increased by 42% and 24% over the last year, according to recent police figures.
Sadiq Khan said: "Social media and the internet can be used to inflame tensions and escalate violence quicker than ever before.
"Internet giants have policies in place around violent content, but they do not go far enough."
Claire Hubberstey, CEO of Safer London, said: "There are some highly dangerous, widely viewed films online that pose a serious threat to young people, both glorifying violence and intimidation and posing a significant risk to those who appear in them."
Youtube said it was committed to continuing and improving its work on this issue and making the site "a hostile space for those who seek to do harm."
Ikea is urging teenagers to stop creeping into its stores and having illegal sleepovers.
[NEXT_CONCEPT]
Four "violent videos" posted on YouTube have not been removed despite requests from police, the Mayor of London says.