Fernando Torres last scored a Barclays Premier League goal before Christmas, while Demba Ba has two goals in the competition since arriving from Newcastle in January.
There are mitigating circumstances, but it is undeniable Chelsea should expect more from their strike force.
As Ba is ineligible in European competition, Torres has been used sparingly domestically, and the former Newcastle striker is in line to return against Swansea on Sunday.
Chelsea were denied victory at Liverpool last Sunday by Luis Suarez's 97th-minute goal and while it is argued the Uruguayan should not have been on the pitch following his bite on Branislav Ivanovic, the visitors would have expected to hold on to win.
Benitez's side were profligate at times in Thursday night's 2-1 Europa League semi-final first leg win at Basle and the Spaniard knows chances must be converted against Swansea for his side to consolidate their top-four position.
"Always when you have a lot of chances you want to be more clinical," Benitez said.
"It's something we have seen during the season, a lot of games where we were doing well in attack and still we didn't take our chances."
- Sports & Recreation
- Fernando Torres
- Demba Ba