What type of drum mufflers are there and where can I get them?

^ Yeah basically....

I tend to stay away from muffling drums as much as possible, but I do use moongel on my snare, so try that.

what heads do you use out of interest?

Snare and floor toms

Srry, What i meant to say was that I really don't know the material its made of xD

You may want to research drum tuning and different heads before you rely on muffling. I always think that it should be a last resort, and you can generally buy heads that have less overtones and wouldn't require dampening.