Arsenal forward Theo Walcott insists his side have got their rivals running scared heading into the business end of the season.

After sweeping aside Villarreal to set up a Champions League semi-final against Manchester United, Walcott's focus is now on the FA Cup and the last-four clash against Chelsea at the weekend.

The Gunners are unbeaten in 18 Premier League games and are confident playing against any team at the moment, according to 20-year-old Walcott.

"There is a lot of confidence in the dressing room, everyone is buzzing," he said. "We feel every team are scared of us as soon as we step on the pitch. It's great to play when things are going like that.

"We are playing brilliant football and scoring goals from all sorts of positions which helps the team.

"We are defending well and even though we have players out injured, others are coming in and doing just as good a job.

"It will be difficult against United but we play them regularly in the Premier League and do very well against them. They are probably the best team in the world but as long as we dig in, I'm sure we'll be fine."

After watching Chelsea ship seven goals in their last two games, Walcott and Arsenal's other attacking players are relishing the opportunity to put Guus Hiddink's defence under more pressure.

Walcott said: "We will be looking to utilise their weak spots.

"If we play like we did against Villarreal, then I'm sure we'll get some goals."

Emmanuel Adebayor, who was on the scoresheet with Walcott and Robin van Persie in last night's quarter-final second-leg win over Villarreal, echoed the sentiments of his team-mate.

"We know how strong Chelsea are, but we just have to put the ball on the ground and play our own football," said the Togo striker. "If we play our style we can beat every team in the world."

Arsene Wenger's men have been portrayed as a club in crisis this season particularly after William Gallas was stripped of the captaincy, but they are now within touching distance of a trophy.

Emmanuel Eboue is desperate to end the club's four-year trophy droht and end the season on a high after getting jeered by his own supporters earlier in the campaign.

"Why not? We (will) try our best to win something this season for our club," Eboue said. "Everybody feels very, very good."

With Bacary Sagna out ill against Villarreal, Eboue had to play at right-back.

Manuel Almunia, William Gallas, Johan Djourou and Gael Clichy were also sidelined, meaning Kolo Toure was the experienced figure in defence.

Toure is relishing the role of underdog against United after facing Didier Drogba at Wembley this weekend.

"We have fresh players," he said. "We played with a new defence against Villarreal and we did very well.

"Now we need to get ready for Saturday against Chelsea. We will have to face Drogba, who is always good against us.

"For the Champions League, I think we are not favourites as United are the champions.

"However, they know we can beat them, so we are looking forward to it. Bring them on."