DIY & Home Improvement

end of the vent/chimney/whatever to see if that is how the critter got in. It seems more likely that a critter would enter the end where the air is blown out rather than enter through the side of the tube (which would mean chewing through it or it rusting or rotting through)... Often the end has a screen or flap or both -- which would be more fragile and susceptible to violation than the tube itself.