give me some ideas
 

Last year I found out I had rkn in my potted planters so I dumped all the potting mix and cleaned out the pots with bleach. I went yesterday to pull out one of the plants and the roots all showed rkn. The pots are on top of concrete. What am I missing so that this doesn't happen next year?

What I have read is that RKN can be blown in by dusty winds.
Also gardening tools can have RKN on them.
RKN can also be spread by dirt on our hands/clothing.
Shoes tracking dirt is another RKN transport.

Also mowing the yard - a dog shaking off dirt - anything that moves dirt from one place to another.

I see hydroponics in your future.







[SIZE=1]Um, can the little bastids swim?[/SIZE]

Probably.