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Malibu PVC
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I've used Muscle drain unblocker for years.
 
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Malibu PVC
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Yes and yes. It seems to work Graham. Several charges of it each time. I then run some water and use a plunger to push it through. I don't pump vigorously in case of pushing pipes off, just accelerate the water to help it take and crud with it. Hot water and fairy may also be be used that way to good effect.
 
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Malibu PVC
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I use just off the boil. I now anticipate hoots of derision and panic about pipes detaching and so on.

I wouldn't plunge with water that hot though.
 
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