STAND-in West Indies captain Ramnaresh Sarwan said Bangladesh would not be taken lightly in the upcoming one-day series - despite their poor record.
The first of three limited-overs games takes place in St Vincent tomorrow.
"They keep improving. I'm sure they are not going to be any pushover," said Sarwan, deputising for Brian Lara.
"Myself, the coach and the manager have been speaking to the players after the end of the England series so that we don't underrate anybody."
Bangladesh have won just one out of 50 one-dayers since the 1999 World Cup, but Sarwan is not exuding confidence.
The Windies split the recent one-day series against England 2-2 after losing the Test series 3-0.
"The biggest concern would be getting complacent against Bangladesh," he said.
"It's something that we don't want to happen throughout this series."
Bangladesh coach Dav Whatmore, the former Australia Test batsman, is realistic as he looks forward to his team's first international tour of the Caribbean.
"Every opposition is formidable to Bangladesh at the moment," he said.
But Whatmore is not ruling out an upset victory - and hopes that if it comes his side will receive due recognition.
"I'd like to think that when Bangladesh win, it's not because the opposition is being complacent," he said.
"I think there is enough evidence to suggest that the Bangladesh team is on the right track and can push the opposition in every match of this one-day series."
The tourists began their four-week tour on a positive note, beating a West Indies Board XI by three wickets on Wednesday.
Bangladesh captain Habibul Bashar said his goal was to gradually climb from the basement of international cricket.
"We've not done that well but we've been improving with every series," he said.
The one-day series starts with successive matches over the weekend, and concludes in Grenada on Wednesday. (BBC Sport)