Immaturity at It's Best!!!!

[ThetaxiUW]

Need a little help here from the guys (maybe girls). Our chapter is having a problem with people acting immature. They consistantly do things that give our house a bad rep, or make us seem that everyone is like them. A guy in our house posted a sign on the DG annex next door to us saying something bad about them when after called and asked us to repair their window with a "bitchy" tone. A senior did this! We also have things blowing up late at night all the time. We have people who consistantly do stuff to sororities just because they are sororities and you know they are all "bitchy" and "beerwhores". I mean seriously. They actually light fireworks in the second floor hallway at eachother. "Why?" you ask.

"To be funny"

What the hell can we do here? Our rules give us the option of two things. Bring a fine on them ($5, doesn't work due to to many people being immature) or charge them with a major crime against the fraternity ($100 fine and suspension). That has only been done twice. There is no middle ground. Anyone got any ideas. We have weekly speakers at the house during the year and I'm thinking of bringing in a speaker to speak directly about that. Seriously, there are people in our house that are pissed off and are considering moving out just because of that reason. Most of the problems are caused by older members though, and thats where the main problem lies.

How do you get a senior member to realize that he is being immature and that he needs to change his attitudes, without being a dick?