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Trichloroethylene is listed as an ozone depleting chemical (like Freon) by the USEPA and it's manufacture and uses are tightly restricted. It's also a listed Hazardous Air Pollutant. Like all chlorinated solvents, it doesn't decompose well. It can hang around the shop longer than you think and increase the exposure risk.
A good alternative is acetone. It's cheap, has low toxicity, and will dissolve just about any hydrocarbons - including epoxy. It is flammable, so some care is needed.
One thing to watch with degreasing - as the solvent volatizes, the surface gets cold. You can get condensation on the blade that will then interfere with the glue.
Stuff like Simple Green and citrus solvents work good for some applications, but they are all surfactants and will tend to leave some residue.
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