Puzzletober 2024: Grungy

Since I accidentally dropped my bag while wading westward, I spent most of today trying to clean it up using the isolated freshwater lake by the northwest of this plot of land. The floor was muddy enough that the bag got quite grungy. It took a while to remove the dirt from the hidden crevices.

Rules: Draw a loop along the edges of cells. 

Numbers are Product Bag clues: they must be inside the loop and reveal the product of the lengths of the row and column they can see within the loop. 

Circles must be outside the loop but are next to the loop on three sides; all possible circles are given.

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