Where to Find and Catch Dustox
From Pokemon Go Wiki
Dustox are found and captured in Nest and Habitat locations.
Nests
Dustox Nests are locations that consistently spawn Dustox.
Habitats
Dustox Habitats are spawn locations where Dustox is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: