meg,

Haven't used this type but have had trouble with subsurface clogging and not wetting adequately. Hard to tell if there is a problem until the plants are showing stress. Then the repair disturbs the soil and may affect the entire run. JMHO Aloha

There is a lot of useful resources regarding subsurface drip irrigation on the Netafim USA website. link is below.

Here is a link that might be useful: Netafim Subsurface Drip

I'm in California where we have been mandated to reduce our water use by 25%, but we've already let about 70% of our grass die and take navy showers (turn water off while soaping and shampooing); short of killing ALL the grass, we're already as water frugal as we can be.

So I'm fascinated by subsurface drip. No one has anything to say about KISSS? The textile sounds genius... would keep roots out and even out water distribution. Is there anyone out there who knows anything?