my main thing about the cleaning out stuff was really to remove the smell so he's not reminded of her when she's not actually there anymore. but you're right, it's great you've killed the germs! (why didn't i think of that!)
i used to give fluffy vit c when she was pregnant but generally, if they're getting a healthy diet, you shouldn't have to give them a supplement. chinchilla nuggets have vitamin c added to them, although it does deplete a couple of months after opening. then again, you've not had him long and if he didn't have a good diet before he got to you, you may want to give him a little boost.
Yes, the baytril & metacam are prescription only but perhaps they can give them to you for emergencies if you explain what's happened. I mean, if you have a problem on Friday night, Monday morning may be too late. Eye discharge can be a symptom of respiratory infection. I have guinea pigs as well and I'm treating one for a respiratory infection at the moment. I noticed he had a little bit of eye discharge but they do produce this white fluid they use to clean their face with so I thought perhaps it was that. But it was there the next day and I booked a vet appointment and when I got home to take him, he had a bit of a runny nose too but that disappeared altogether by the time we got to the vet (so you may miss symptoms that are not present 24/7). They listened to his chest and he did have respiratory infection - he's just finishing his course of baytril and he also has some eye ointment. There were no other symptoms, he was eating as normal.
So I cannot stress that enough, ANY changes, have it checked out.
I would not recommend giving him a fresh apple slice. You could give him a 'raisin sized' dried apple piece as a very occasional treat. They do love sweet stuff but sugar is very dangerous for them because it can cause diarrhoea and this is a very bad thing as it can kill them very quickly. You need to monitor the shape & size of his poo (sorry
) - it should have nice round ends, if the ends are sharp/pointy, this is a sign the poo is getting soft (stop all treats), if the poo is actually sticking together, it's not good and he'd need to see a vet & if it's actually pooling then it's red alert.
You will find that people feed them all sorts of stuff - a chin i got from a rescue yesterday was fed on chinchilla mix and banana chips. she has a really bad dental problem which my vet believes has been made a lot worse due to the diet.