```ruby
class LogitechUnifying < Cask
  url 'http://www.logitech.com/pub/controldevices/unifying/unifying1.10.421.dmg'
  homepage 'http://www.logitech.com/en-us/promotions/6072'
  version '1.10.421'
  sha256 'd9e196411cc4c0aec72fd01575eaffed228f95bc7d7ededc532d53f8602caa03'
  install 'Logitech Unifying Software.mpkg'
end
```

Add uninstall stanza for Logitech Unifying
user
```ruby
class LogitechUnifying < Cask
  url 'http://www.logitech.com/pub/controldevices/unifying/unifying1.10.421.dmg'
  homepage 'http://www.logitech.com/en-us/promotions/6072'
  version '1.10.421'
  sha256 'd9e196411cc4c0aec72fd01575eaffed228f95bc7d7ededc532d53f8602caa03'
  install 'Logitech Unifying Software.mpkg'
  uninstall :pkgutil => 'com.Logitech.*pkg'
end
```
assistant