In my case there was no digging, heck she didn't even bother to lay them in the lay box....hehehe. For the first set i found them under one of her other hides, the second set out on the tile. Granted this time she had spread around much of the vermiculite, i guess thinking she'd make her own lay area. It didn't work though, both eggs were stuck to the tile but luckily came off without being damaged.
Red 
>>2-5 weeks after mating she should lay her eggs.
>>She will start digging in her nest box when she is ready to lay, normally at night or early morning, keep an eye out for this. Although sometimes you have a gecko that will dig for a week before it lays, but normally its the same night.
>>Once the eggs are laid and have hardened up(I ususally wait about 20-30min. to take them from mom, once she's gotten them in the position she's wanted them), mark the top of them with a marker, and place them in the egg container the way they were laid as to not drown the embryo, and then put them in the incubator...and thats about it Now comes the fun part...waiting. Unless you candle them, you probably wont know if they are fertile or not until they hatch or rot. By candling, take a small flashlight, place it up to the egg in the container, and if it is fertile, it will glow red with lots of veins. If not, it will appear yellow.
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>>Good luck!
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>>~Crystal
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>>Crystal Light (Yes..that's my real name)
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>>*Whenever you lose a gecko, just think of it as God building on his own Leopard Gecko collection
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>>The Gecko Barn
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Crested Gecko Zeek:1.0, Ziggy and Zeus
LEOS: Boo: 1.0 normal , Bronx & Nala: 1.1 blizzard,
Lily: 0.1 patternless, Abby: 0.1 albino, Zoe: 0.1 reduced pattern, Dot: 0.1 hypo
New Girls: Flame, Karma, Bubbles and Bell pics coming soon
Chip: 1.0 papillion (small dog)