Dear Friend,

I think what Peer Saab as mentioned is correct. I mean you better make each one of them feel that what they ate doing is seriously effective the growth of company so always in such cases you better handle the case with the TL of that particular team which needs to be done now and than if such things keep happening to make them understand that nobody gets paid for nothing.

I hope you will try this out to get your problem solved and you really dont need new ideas to handle such things. Just make sure you have your TL and management with you and goahead. All the best..........

Regards
Amith R.