Hehe funny story
Btw the supposed fact stated everywhere about them being "herd" animals is not good information. Cavy Porcellus naturally forms small harems with one male and several females, or in lower population situations, it is more like families. There are agenda-related reasons for why sites around the internet continue to call them "herd" animals (and this bit of less-than-ideal information has indeed propagated far and wide).
Yep they got ate up.
Certain web sites right now are greatly exaggerating the amount of cage space needed. One of the regular 90cm x 60cm ones works fine for 2. In terms of cleaning, it can be useful to note that guinea pigs have bathroom area preferences - the only question is how well the cage enables them to exercise those preferences. If you can design your cage interior in such a way that they usually poop and pee in specific areas, you can manage those 'litterbox' areas differently, to the effect of generally having them not living directly in a pile of poop plus it taking less time to clean out the messy areas. They generally like to poop in corners, along walls, and under/inside things.
Below is a little "box house", not a great example but just to show the idea. They may prefer to poop and pee in such a box house. The ones I make now use a thick plastic liner plus a small piece of wood across the front at the bottom to keep the stuff in (wood like 1cm tall, much taller is a risk of them injuring their feet/legs on it). Also I use wood pellets and not wood shavings like this pic has, and I protect the edges of cardboard box homes with duct tape.
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Another type of thing they are likely to poop and pee under is below, although this fits only one guinea pig under it at a time. Wood pellets go under it, of course, not just taped-down newspaper.
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Corner litterboxes like below can sometimes be used to good effect, but sometimes not, because they might like to pee next to them or in a corner next to them:
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Creating an overhang over a litterbox area as below can work well:
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