CSU spokesperson Greg Murphy confirmed Wednesday that they have received releases and plan to transfer.
Scales and Hamilton have one year of eligibility left, while Janssen has three years left.
Hamilton, a former St. Edward product, was expected to transfer after being dismissed from the team in early January.
The redshirt junior from Cleveland was kicked off the bench in the first half of a Jan. 8 loss to Green Bay following a heated-exchange with head coach Gary Waters. The next day Hamilton was dismissed from the team.
He was also suspended for the first three games this season for a violation of team rules.
Hamilton appeared in nine games with the Vikings, averaging 2.9 points and 2.1 assists per game this past season.
Scales will graduate in May and can transfer to another Division I program without having to sit out a season.
A High Point, N.C native, Scales appeared in 71 games with CSU, averaging 1.3 points and 1.3 rebounds in 6.4 minutes per game.
Scales showed promise in his sophomore year - posting an eight point, nine rebound effort in a loss to VCU, but never found a role in Waters' defensive-minded system.
Janssen, a 6-foot-9 redshirt freshmen from Mountain Creek, Australia, scored nine points in 11 games with the Vikings. His best game came in a loss to Green Bay where he scored seven points in five minutes.
The departures gives CSU three scholarships to fill for the 2016-17 season.
Waters' recruiting wishlist includes a junior college point guard, a second point guard, a big and a wing/forward.