Posting at OP’s request.
Overall, this doesn't really seem like anything more than a spooky scary extraterrestrial living trash can with no real backstory other than probably being a spooky scary extraterrestrial living trash can. Items like these and why they're usually not received very well are described in Dr. Mackenzie's Common SCP Pitfalls guide. I'd suggest taking a look through that entire section of the guide and try to stray away from the things described there.
Something that many people look for in an article is a story or an interesting twist of some kind, and this skip lacks something like that entirely. As Ihp said, it's nothing more than an aggravated monster that needs to be fed daily to keep it in containment. Things like this are very Series I-esque and even then they're done with much more interesting and scary features than this creature. I usually don't say this but, in its current form with its current intent, this concept really doesn't seem like it has much potential on its own. However, if you manage to come up with an interesting story/twist to the item, that could change the likely outcome entirely.
Throughout the article, there are a lot of awkward phrasings alongside grammatical and spelling errors. Due to my busy schedule this weekend, I don't necessarily have the time to point out these things. However, going to somewhere like #site19 and #thecritters is a good place to start for in-depth feedback. Though, when you join those chatrooms, I'd make it very clear whether or not you're looking for grammatical feedback, conceptual feedback, or both.
