Need advice for how to clean/restore G1 with flood damage

So my collection of G1 toys were unfortunately in river flood waters for weeks. I was able to save all of them and the loose parts, but I'm not sure how to get them back into good condition.
I need to remove the caked-on dirt and ideally disinfect them. I expect to use a soft brush, like a makeup, paint, or small tooth brush, but I don't know what cleaner to use that's safe.
Some of the stickers were destroyed, but others look like they survived fine. Is there a place that sells replacement stickers if I end up wanting to do that?
I also think some of the screws may be rusted, but I don't know if it's possible to replace parts like that? What's normally acceptable or recommended for a restoration situation like this?
I appreciate any advice you all can give me for how to save them.
Thanks
I need to remove the caked-on dirt and ideally disinfect them. I expect to use a soft brush, like a makeup, paint, or small tooth brush, but I don't know what cleaner to use that's safe.
Some of the stickers were destroyed, but others look like they survived fine. Is there a place that sells replacement stickers if I end up wanting to do that?
I also think some of the screws may be rusted, but I don't know if it's possible to replace parts like that? What's normally acceptable or recommended for a restoration situation like this?
I appreciate any advice you all can give me for how to save them.
Thanks