First off do not use sani flush on snare cable very caustic and at some point will bite you on coyotes.
Baking soda in a lighter mix is perfectly fine, don't boil them so they come out stiff 10 mins in boiling water is plenty.
You can paint them as I do many that way to match different surroundings through out a calendar year not problems at all, if your using cam locks then no worries with paint and how that snare closes.
I don't buy into this that a snare if properly cared for will get refuals from big dogs backing out. Coyotes are used to busten through brush, grass and weeds to get food and to where they need to be. A shiny snare or too small a loop is more the culprit. Wind can also play a role in scenes in the snow loop falls down and coyotes sees it walks around it, many think he backed out when in reality the loop as down upon arrival.
In windy country such as I have I want my locks at 1 or 2 O clock so it stays up due to the wind, bumping into cable is something the highest majority of coyotes could careless, provided the opening looks clear from his view.
