Wasps boss Dai Young described himself as "thrilled" after seeing side collect their first Aviva Premiership victory since February at the expense of Worcester.
The first half was evenly contested but tries from Christian Wade and Jake Cooper-Woolley soon after the restart took the game away from winless Worcester, who went down to their fourth consecutive defeat to leave them stranded at the foot of the table.
A late try from Guy Thompson gave Wasps their bonus point and had Andy Goode not missed with all four conversion attempts, Worcester's 32-16 defeat would be even greater.
"We have to put last year out of the window. We can't carry negativity forward as it is all about this year," said Young.
"Today we were in control for nearly all the game but I was frustrated that we didn't put distance between the teams earlier."
Wasps only led 11-9 at the interval - Matt Mullan having set Wasps on their way with his first try in five years - but the tries from Wade and Cooper-Woolley made the difference in the second period.
"Our scrum was a big factor, it provided a very strong foundation," Young added. "We felt we had to work on our scrummaging and made it a big thing so as to change the perception of that part of our game."
Worcester boss Dean Ryan conceded that the scrum had been a decisive factor in the match.
"Our scrum didn't work and our line-out was sloppy," he said. "We were competitive in the first half but we were stripped of the ball on at least seven occasions and the scoreline kept flashing away from us.
"Matt Mullan got the better of Euan Murray in the scrum. Mullan was speedy across the gap but as an experienced international, Euan should have been able to deal with it."
Worcester have only a point from four league matches and Ryan accepts there are difficult times ahead.
"It is a huge challenge to get this club sorted out," he said. "I'm very disappointed that we weren't competitive in the second half.
"Perhaps we need to more simplistic as we seem to be chasing games, too early and from too deep in our own half."
Wasps flanker Ashley Johnson was named man of the match and he described his joy at helping his side earn their first win of the season.
"After three losses we were starting to feel the pressure. It's a huge relief so that so we can now go down to the Saracens next week with some confidence," he said.
"In the last three games we've made mistakes and needed to eliminate them. The guys stuck together and did so and our forwards provided a strong platform to win the game."