who's going thru the alleys and cutting down trees on our properties? have been informed it may be garbage collectors, but someone has cut down (butchered) a walnut tree on the alley side of my property on ash, and left it there to rot. working a lot and just trimmed all that one month ago - growing thingies there to keep soil from eroding. have lived here 27 years and this is new. any ideas? thanks!