Richard J Kinch wrote:

If "sealer" was cost-effective, somebody besides sucker homeowners would be
buying it. You don't see the DOT putting it on roads, because they have
engineers who know better.

I've seen sealer sprayed on residential streets in the area. It was a
thinner stuff, then covered with a layer of sand, then swept after a day
or two.

It may not last, and makes a mess out of the cars on it, but
municipalities are on budgets as well.