I think I've made a topic about this before but I've been looking into a mat for my electric kit. My house is about 10-12 years old so it's built out of corrugated cardboard so the vibration from each hit (especially on the toms and hi hat) are going straight into the floor...and I bought this kit because I thought it would be quieter.
I've seen a couple on thomann, namely
this one which according to the Roland website will deaden the noise and make me drum like Jo Jo Mayer. The sales blurb sounds good (three layers & rubber feet for noise absorption) but then it should.
Has anyone got one to recommend? £179 RRP is a bit steep for what it is...