>>1264531>$32 with brush and lube>$25 withoutNot really worth it if you own a Walmart bike. Use an old toothbrush if you need to get gunk out of the chain, clean it with carb cleaner or even that WD-40, hit it with 3-in-1, run it through a rag to clean off the excess 3-in-1.
If you aren’t satisfied with that, buy a chain for $10. Drop another $5 on a cheap chainbreaker if you want to make it an easy install, otherwise you can get away with a hammer and screwdriver.
Park Tools makes some cool shit though. If you ride a lot, they make some great multi-tools to carry with you.