Assistant Manager Alan Knill praised the application of the players in Saturday's pre-season victory over Grimsby Town at Blundell Park.
A brace from skipper Billy Sharp, after Dominic Calvert-Lewin had opened the scoring paved the way for the success over Paul Hurst's Mariners and United's assistant boss was pleased with what he saw.
Knill remarked: "It was a very good effort and the desired response after the defeat and performance at Halifax.
"We made some demands from the players and they answered the questions we asked of them, it was a very dominant display.
"Every game matters if you play for Sheffield United and at Halifax we just turned up and expected to win.
"It isn't going to be like that and we reinforced that message, the performance at the weekend proved the message had been taken onboard."
Chris Wilder's number two believes preparations for the 2016/17 campaign are coming on nicely, although he refused to rule out further incomings, adding: "Billy (Sharp) is looking in good form and he took his goals really well as he has done throughout pre-season, but throughout the team we were competitive and focused.
"The minutes are building up and we need to continue progressing and improving. We need to be ready for Bolton, rather than hoping we're ready.
"We're in good shape, but like everyone else we are always looking to strengthen the squad and that will continue to be the case until the transfer window closes."