Contra Insetos Parasitas (Portuguese for "Against Parasitic Insects") is the only release by Brazilian alternative rock band TH6.

[3] Produced by vocalist/guitarist/sole lyricist Marcão (formerly of Charlie Brown Jr.) and Tadeu Patolla (who had also collaborated with Charlie Brown Jr. previously), it counted with numerous guest appearances by musicians such as Di Ferrero and Gee Rocha of NX Zero, Badauí of CPM 22, Tico Santa Cruz of Detonautas Roque Clube, Baía of Tihuana, Marcão's former Charlie Brown Jr. bandmates Champignon and Renato Pelado, and Pablo Silva, who had played alongside Champignon on his former project Revolucionnários.

In 2009 the band would elaborate that they recorded over 40 tracks for the album, selecting 25 for inclusion; two of those outtakes, "Que Fase" and "De Boa", were later uploaded to their Myspace.

The album was received positively upon its release, with critics praising the band's sonority mixing influences from hardcore punk, dub, rap rock and nu metal.

A review from website ZP called it "a great debut, more accessible and pop-sounding than Charlie Brown Jr.'s last releases".