How to suck seed in yardwork without really trying

In our backyard, we have hundreds of dandelions. Each dandelion plant has several flowers, which immediately turned into open seed pods after I sprayed poison on them. Within one day, half the yard was completely covered by ping-pong ball sized spheres of dandelion seeds. There was no wind. Not even a breeze. I got an idea. I have a leaf-blower/sucker I use in the fall... it does a good job moderate-sized leaves, sucking them up off the ground, grinding them up a bit, and blowing them into an attached bag. Would this work for dandelions? Hmmm. So I tried it. It sucked up the seeds, and soon a corner of the bag was full. I kept moving and sucking seeds up until I had covered the whole back yard. Now the evil weeds would not be able to spread their seeds as they died from poison. An hour later, however, I noticed more puff-balls were popping up. OK, so I missed a few. I'll get them tomorrow. The next day, half the back yard was covered with dandelion-created ping-pong puff balls. The moral is, I think, that you cannot stop a force of nature, no matter how innovative your approach is. It would not surprise me if, at the end of civilization, WALL-E finds a thriving dandelion population.