reseeded lawn and certain patches aren't growing

I've tried to reseed those areas twice and the spots are still bare, should I try a different brand of seed? Is it the sunlight? I'm baffled why these certain spots on my lawn aren't growing grass despite constant watering. I'm using Scotts sun and shade.
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Joe wrote:

Has some kind of chemical, ie gasoline, oil, fertilizer etc., been spilled there? How large are these "spots"? Take some samples and have them analyzed. You may have to remove some soil and replace it.
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Joe;751307 Wrote:

Are the bare patches in areas of heavy wear or poorly drained areas? I so the soil may be compacted and will need to be aerated. Watering ma simply be drowning the seed if this is the case
-- Helen R
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