hi air86x
I love our guinea-pigs. My piggies ( we have a trio. GP4 (DD pig) GP5 (mine) both sows. GP6 (our new neutered boar) is DD pig.
They are lovely, chatty, very vunerable little creatures.
When my piggies are indoors for winter, the hay gets flipping everywhere. I ended up giving mine hay cookies to cut down on the mess (they had hay in their Pighouse). The hay smells more than the piggies do.
We converted my DC wooden playhouse into the Pighouse when DD got her two rescue boars (GP1 and GP2)
I wouldn't trust mine free ranging indoors TBH, apart from the mess they would chew wires,cables,any soft furnishings......)
And they can get into spaces you wouldn't credit .
A 2 year old could sit with a piggie in a blanket but I wouldn't let them lift a piggie. They struggle and get scared if they feel unsafe and contrary to what lots of sellers will tell you, they can bite. My GP5 is a toothy piggie. I know it's a gnaw. DD knows it;s a gnaw. A small child will say it's a bite (which to them it would be)
Food - I buy the pellets, we have veg (DH and I are vegetarian, and I buy Piggie veg)
It's the hay that costs me the most (I buy a £3.60 bag a week) I do use too much I know.
Just bought Megazorb for when they bond (£18 bag).
And mine need daily cleaning - newspaper and hay. They are messy little creatures, especially the sows. Pee everywhere
Cages, runs, food bowls, water bottles is a one off expense.
And the piggies themselves (usually Rescues ask £10 a hog )