Jahnke's vermin trap roosts
Posted: Tue Apr 26, 2016 1:22 pm
Here's an idea: Might work for red mites. Not so sure about the others!
From a 1917 Everybody's Poultry magaine ad:
Link to the patent with description: https://www.google.ch/patents/US775603
From a 1917 Everybody's Poultry magaine ad:
