I wrap the bottom eight feet of my R-25 with plastic garden fence material
and attach it with plastic cable ties. The holes in the material will not
permit even the smallest shoe. The material seems to last quite well. The
wrap has been on the tower for about five years.
I have a ladder that just reaches over the wrap so I can go up and down
without removing the wrap.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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