How would I destroy a certain part using a script?

So basically, I made a firebolt tool that shoot's a firebolt. What ever it hits, it creates instance.new (fire). When it hits a humanoid, it destroys after 3 seconds, but on objects, it just stays.

instead of checking to see if the object it hit is not a humanoid, I figured why not create a global script that checks to see if there's a object and then destroy it after x amount of seconds.

I made the fire's name "Bruh", so the script knows what to destroy, though I'm not sure what method to use to accomplish this.