  The PICASSO dark matter search experiment operated an array of 32 superheated
droplet detectors containing 3.0 kg of C$_{4}$F$_{10}$ and collected an
exposure of 231.4 kgd at SNOLAB between March 2012 and January 2014. We report
on the final results of this experiment which includes for the first time the
complete data set and improved analysis techniques including \mbox{acoustic}
localization to allow fiducialization and removal of higher activity regions
within the detectors. No signal consistent with dark matter was observed. We
set limits for spin-dependent interactions on protons of
$\sigma_p^{SD}$~=~1.32~$\times$~10$^{-2}$~pb (90\%~C.L.) at a WIMP mass of 20
GeV/c$^{2}$. In the spin-independent sector we exclude cross sections larger
than $\sigma_p^{SI}$~=~4.86~$\times$~10$^{-5 }$~pb~(90\% C.L.) in the region
around 7 GeV/c$^{2}$. The pioneering efforts of the PICASSO experiment have
paved the way forward for a next generation detector incorporating much of this
technology and experience into larger mass bubble chambers.
