It can be used in conjunction with other treatment modalities (e.g. manual therapy and exercises) to achieve a beneficial outcome. (ktpt.ca)
It can also be used in combination with other treatments for those with severe anxiety. (kristenlevine.com)
A flea comb is a pretty nifty tool all on its own, but it's so much more effective when combined with other treatments, such as a flea bath. (pesthacks.com)