Gangsters are telling those wishing to make it to Britain to "hurry", and claim the controversial plan will make it "impossible". They also warn that anyone who makes the trip after the deal takes effect will be sent to the African country.
A Border Force source said: "It is a scare tactic. But it is clearly working because even in bitterly cold and dangerous conditions they are trying their best to come here."
"It's shocking. There will be more deaths soon."
"The migrants have no idea - they risk their lives to come to Britain, not Rwanda."
The source added: "This shows the gangsters will use every trick in the book to keep this lucrative business model going.
"They can easily adapt, just like drug dealers."
"It is a criminal enterprise on a global scale."
Earlier this month, one person died and 66 people had to be rescued when a crowded boat ran into difficulties.
The tragedy underlines the importance of Rishi Sunak's efforts to "stop the boats", Downing Street said.
At least eight other asylum seekers died while attempting to make the perilous trip this year.
The Prime Minister saw off a Tory rebellion over the Rwanda bill but still faces a battle to get it through Parliament.
The legislation passed its first Commons hurdle with a majority of 44 but there will be further votes in the new year. By Jonathan Walker, Matthew Davis, Daily Express