DuraWattle should be replaced when there are large tears in the filter fabric. Sediment is captured by the filter fabric wrapped around the core of the product and if the fabric has been severely torn, then the product has been compromised.

DuraWattle should also be replaced whenever the inner foam core does not bounce back into shape after being driven over. This can be caused by several factors. Usually, it means the plastic seal has been torn or compromised and the core is absorbing water. Without a consistent barrier height, a perimeter of installed DuraWattle can be overwhelmed with concentrated water flow.

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