I think there is no zero percentage house edge gambling sites are there. Because it is not worth for site owners. If they give 0% house edge then why simply they invest a lot of money to create sites, it is no use. Safedice site I don't have any idea about this site. Let me check once and later I will share my experience. But I think there is not

Fully agree, that were my exact thoughts on this subject.
Why would any Cassino have it 0%? Unless owner's rich and doesn't need some profit as backup to cover up some of the costs or pure marketing campaign.
In fact for running their casino with facing financial problems they must have to get some house edge, but you can see that there is a lot of competition therefore they must keep their house edge as minimum and also facilitate the gamblers in a good way.