Infest the Rats' Nest is the fifteenth studio album by Australian psychedelic rock band King Gizzard & the Lizard Wizard. It was released on 16 August 2019 by the band's record label, Flightless, and ATO Records. The album sees the band using a heavy metal and thrash metal style, which they had only briefly touched upon on previous albums. Its lyrics address environmental themes such as climate change and ecological disaster through a cli-fi narrative involving space colonization.
The album received generally positive reviews, with critics highlighting the performances and themes, and was nominated for the 2019 ARIA Award for Best Hard Rock or Heavy Metal Album. The album charted in several countries, including peaking at number 2 on the ARIA Charts and number 3 on US Independent Albums.
This is the band's last album with the drummer and manager Eric Moore (who for this album only contributed with the backing vocals), before his departure the following year.
