Can someone please explain how sentry-quad pumpkins work?

[Orange Cat]

ive been trying to use it and nothing happens

[praise]

Here you go. https://wiki.teamfortress.com/wiki/Halloween_Spell:_Sentry_Quad-Pumpkins

[Punishment_Fatal]

The rockets from your Level 3 sentry will have a purple trail and orange rockets instead of the normal rockets.

[krawtch]

Your sentry will shoot candy corn and the dispenser serves pumpkin spice coffee

 

ok that was a lie, but this isn't:

 

The rockets from your Level 3 sentry will have a purple trail and orange rockets instead of the normal rockets.