Shaun Howard of TNC asked me to join your group and post this:
When I used a couple different models of herbicide applicator dauber wand, I grew annoyed whenever it dripped on the ground or on my boots. I experimented, and found a way to reduce that to near-zero. And hold more herbicide. And reduce me having to lean over when using it. After some people asked for this, I posted it (and occaisionally update it) at www.ericpiehl.com/wand.pdf.
If you want to see the original designs, please see their attributions in section 1 "Document History".
Pretty good, but needs some work. If you want to help with edits or improvements, or think of a better home for this document, please let me know! In particular, it needs some serious review of labeling and pesticide applicator license requirements. If you would review this, I would greatly appreciate it; otherwise I will update the next time I go through the docs.