How to block emojis on YouTube Stream

Can I just copy and paste a 💀 and 😈 in the blacklist blocked words in nightbot website to block those emojis, or do I need a specific command to block them on my YouTube stream chat? Please provide both commands to block the 💀 and 😈 emojis if a command is needed. Also, if you can tell me how to find out the specific emoji number to block any emoji on my YouTube stream for a command then that would be great, but only if I need to use commands. Also, do I just go to the Nightbot website and click on commands then add command to implement commands like blocking emojis if needed. Thank you.