Have a lawn, I powerraked and overseeded this year, was getting thin in areas... After seeding a couple weeks go by, watering 2x daily 25 min on the rotors and 3 to 6 on the sprays. Where the sprinklers DO hit, it's stayed wet. Still NO seed coming up in spots. Finally take a closer look and find a thatch layer like none other! Literally 2 inches of thatch, the top looks like soil, hell, I thought it was, NOPE, just thatch. These places are BARE and there's no way to get seed to root into the thatch... A slicer won't even penetrate deep enough and aeration would take a long time to break down this layer. This is only really BAD in spots, not the whole lawn... Is tilling it under with a roto-tiller about the only option? I just don't know HOW to get seed down here! Problem here is the homeowner... She's already PISSED that I had to have the sprinklers running 2x a day for the last couple weeks. She "has" to have her time outside, either laying in the sun (mind you she looks like she's 90 from all the sun over the years) or fiddiling with her flower beds in the back. She can't do any of that *she says* when it's wet in the yard. She about had a FIT when I seeded and told her how much it would need water. Totally ruins her routine I guess... I'm at my wits end here... I thought powerraking was supposed to take care of THATCH, but it only scratches the surface, not below where the real thatch lives! I'm pizzed cause I have no seed in the bare spots and I'm afraid the solution is going to be VERY labor intensive and is going to have to be done yesterday seeings as it's already late i the seeding season... Help!