OK, I will list the possible options.

1. Throw in the rubbish. It will be crushed by the dump truck, and dumped in the landfill. The mercury will leak and eventually poison the underground water supply.

2. Keep it in your attic. The day you die, your children will find this. "Why did dad/mom keep all these light bulbs in these boxes. There must be 200 of them. And they're all spoilt. Let's throw them in the rubbish" ... "oh, wait, there's a label here. It says 'do not throw in rubbish, mercury will poison our environment'".

3. Dig a small hole in the garden, maybe 2 feet deep. Bury the bulbs. Hopefully, people walking over it would not break the bulbs. Hopefully, the next time you dig a hole, you don't hit one of these burried bulbs.

4. Put the bulb in a big glass jar, along with some chemical that will react and bond with the mercury making it liquid or solid. Close the lid, break the bulb.

BTW: we're not supposed to throw used batteries in the trash either. But guess what everyone does?

Penang is too far away. Somebody else, please post a location nearer to KL?