I'l just put these in a numbered list to avoid making my post too long. : p
1. Depends on your preference, but you want something that's safe for eggs. Duct tape is too acidic. The most common things I see people use are clear nail polish, scotch tape, and hot wax. You must make sure the...
Oh no, I'm sorry you're having a bad experience. Incubation is very fun and rewarding, but it's also hard, nerve-wracking work. : (
First of all, you should clean those eggs. A tiny bit of poop/dirt won't hurt them, but the spilled contents of another egg are perfect for microbial...