Im aware they are random but I have 2 left. Can anyone share any difficult molars you have come across so I can check in my yard.. 🫶 

You check high up on the fences?

Also, using handy gnat is a good way to find them without having to build, since he can go anywhere.  

Also worth noting - it's not really worth getting -all- of them, since the food/water upgrades are mostly superflous.