I think that mourning gecko eggs get stuck to whatever they're laid on; removing them can destroy the eggs. If they were laid on the glass you can tape a clear plastic cup over them to protect them. If they were laid on a piece of furniture that can be removed then you can incubate the whole thing.
This.
Also, just my own experience from similar geckos, they often will hatch anyway if you forgo the cup method, if the cage is sprayed on a regular basis. However is you really really want these to hatch, the above advice is the way to go
