Hi. Thanks for the very clear, specific answers. I was able to confirm that those two files were the only ones left behind, apparently intentionally. As a matter of pure curiosity, you may want to see how my .plist was written.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Disabled</key>
<false/>
<key>Label</key>
<string>com.zeobit.MacKeeper.AntiVirus</string>
<key>Program</key>
<string>/Library/Application Support/MacKeeper/AntiVirus.app/Contents/MacOS/AntiVirus</string>
<key>OnDemand</key>
<false/>
</dict>
</plist>
