[Overtaxed]

Then of course your neighbors let their sand burrs go to seed and the seeds land in your yard.

[2Jedismom]

Yes. Or their kids track them into our yard. Like I say, we have to be diligent. We most commonly see them re-appear around the edges for this reason, I imagine. They also seem to use care not to blow the seeds into the yard when they mow. Still, my husband has also pulled the burrs in their yard, using a long handled cultivator three feet from their fence line.

[2Jedismom]

Going outside with the boys for a while, before it gets too hot. We put netting over our tomatoe plants to keep the birds away...I want to check that out.