I'm not convinced this product saves anything. We install a LOT of French drains. Typically about 4" wide trench. So the EZ Flow stuff would save us from having to haul in gravel and line the trench with landscape fabric. But as wide as it is, it would also mean we have to excavate and haul away a LOT more dirt than we normally would. So I think that's a loss, overall. I'd rather haul in wheelbarrows of new, clean drain rock than haul away more loads of soppy wet clay soil. I just can't see how this product saves me time or money overall.