I bought this brush to replace an HVAC brush that a mouse ate. I believe if he/she wants to eat it, it will hit his teeth hard! (evil laughter) Great brush, less flexible than the plastic version but more durable. So it's a compromise, but I think it's worth it. I've used it to clean several sink drains. This works especially well for sink overflows, which I think few of us remember/ever think about cleaning. Note Note. Can't speak to cleaning the deep grease oil lines, but it definitely helped me. I hope this was helpful to you?
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