From what I've seen (so far), CCleaner is the only software of the tracks cleaning genre, to include Seamonkey and Flock in its list of applications to be cleaned... and I see I myself was asking back in February whether Seamonkey would ever been included by CCleaner, and many ppl have asked since. Handy to know, as currently I'm not using Seamonkey or Flock but may do sometime in the future!