Hat-trick hero Davies praised the team's marked improvements, but claimed there was still room for improvement before next week's all-Welsh clash at Rodney Parade.
"It was good. It was a shame from last week that we weren't as accurate as we were usually. We were still not as accurate tonight but we're moving in the right direction," said Davies.
"We've got a bit of momentum going forward and the boys are looking forward to it. The derbies are always the best games in the league and we're all looking forward to it."
Tries from Andy Fenby and George North before the break set the Scarlets on their way, before Aironi's Jaco Erasmus saw yellow for repeat offending.
Davies then touched down twice in succession, before Martin Roberts crossed over to add his name to the score sheet.
Davies then completed his treble before Nick Williams touched down for a consolation try late-on to restore some pride.
Stephen Jones scored 19 with the boot to cap a fine night for the Scarlets, while the defeat was the third in a row for the new Italian side.