I tried 3 brand of wall putty fillers to cover holes on my wall. There are:-
U fix Putty Filler
Pentens Putty Filler
V tech Putty Filler
The Best Wall Putty Filler
The best putty filler is U fix because it is really fast to dry and it doesn’t create small crack if the hole is deep.
Pentens and V-Tech Creates Small Crack
Pentens and V-tech both are clay like and v-tech putty clay doesn’t dry as fast as Pentens. Besides both of them create small crack if apply on deep hole.
There is no more crack for Pentens after apply 2nd layer of putty (after the first layer has dried) but v-tech the crack still appears.
So I don’t recommend v tech for putty filler.