New ferret owner wanting to build outdoor encloser

Hi I am new to this group I am about to purchase my first ferret and I want to build an outdoor enclosure I have looked on mine and I cannot find what type of bottom I should use so the ferrets can't dig out but still allow grass to grow so they can enjoy the outdoor enclosure it will be 8 feet tall 10 ft wide and 20 ft long any advice would be greatly appreciated thank you

Hello! Wanted to let you know this forum isn’t very active anymore. Most have moved to Facebook. There are many ferret groups there. A lot of info.

 
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