Friday's hosts started their campaign with a defeat to England but bounced back to beat Italy and Ireland, keeping alive their own title hopes.
And although Wales will finish their campaign at home to defending champions England, the No.8 admits the trip north to Inverness will be as tough as they come.
"Scotland have beaten Italy and Ireland and pushed England close so we are going to be doing a lot of work on them over the next week," said Jenkins.
"Training in live situations with the national team has definitely given us a boost.
"The senior players bring an added intensity and competitive edge to training and set high standards which we've taken onto the pitch in our games."