i agree with the keep her in the house idea. 100% solution. If you cant be outside to supervise, the dog isnt outside either. You let them out only long enough to do their business and then bring them back in. my dogs get a maximum of 5 minutes to do their business before they're called back in. (we're also supposed to NEVER have them in the yard unsupervised to begin with anyway. Sorry once potty trained, i'm not standing outside in my PJs dead of winter freezing MY butt off waiting for them to pee and poo!). FYI the poop in the hole thing, doesnt always work. Some dogs will dig right on through it.
Shasta GSD 5/5/10 CGC, ITD, TC
"Dax" Thor z vom Weberhaus BCAT CAX2 CGCA ETD HCT NCO-1 PKD-T RATI RATN RA TC TKA 3/18/2013
"Hades" Guilty vom Blutfeuer 10/26/2018
Zena GSD 6/1/03-2/16/2016
Riley GSD/BC 1/10/05-2/1/2013