here is a blog post we wrote which describes a basic squirrel job.
I like the fact you have this info available to people with a squirrel problem. I get razzed all the time (by WCO's) because I have "too much info" regarding bat exclusion work on my website. Sure, I lay out exactly what I do to solve their problem. If someone wants to attempt it themselves, they can find plenty of info online.... might as well be from my site. I'm already booked solid with spring bat exclusions, which pretty much blows the theory that I'm cutting my own throat.
Regarding the squirrel info, the only issue I noticed was it is written as though there is only ONE squirrel. And of course, once in a while that is true, but in most of my squirrel jobs the number removed ranges from 2 to a dozen or more (grays). These are the attic dwellers, not every neighborhood squirrel. I target the rooftop entry points, never setting traps on the ground. I will set where the tree limbs meet the rooftop, but not in the yard.
Over the past 24 years I've worked out a fairly standard procedure. After locating the entries, leave them all open for a couple days and do a heavy trapping program. I use 3 to 4 traps at EACH entry area. Sometimes there will be seperate "families" using opposite ends of the structure, so I don't block off any holes at first.
Trap until catches drop off. Then I install a one-way excluder door for a day or two, leaving just a pair of traps at each entry area. I never set a single trap, as a bird can ruin your chance for a catch. Always set more traps than you need so any non-targets don't totally ruin your day. I'm not driving 35 miles just to release a sparrow and re-bait.
Once the guilty party (or parties) are removed, finish up with the repairs and exclusion work. I also do a lot of tree branch removal (one of my favorite add-on services), cutting back about 12 feet from the structure. Having the towable lift is advantageous for those jobs.
I know a lot of guys install the one-way multi-catch traps on initial set-up, but I've had squirrels chew back around the multi at the entry area or at a new location on the very first day. I like to remove a few before covering the entry hole(s) to reduce the possibility of creating more damage to the structure.
Once in a while you can tell it's just a single or pair by the activity level and sign. I will use a multi right off the bat in those cases. It's like any other call.... experience will dictate the exact procedure for the particular job.
And as Kevin mentioned, I never set traps in an attic. Squirrels are very neophobic and sometimes avoid traps for a week or more inside the structure as it is something new in their domain. Setting them outside seems to eliminate the waiting game. Most likely due to the fact they forage for food outdoors, and are more likley to respond to bait outside as compared to in the attic.
Pic below: I set this job up, drove to Subway about 5 miles away, inspected another home in the area, and returned within 2 hours of set-up and had 4 for 4. Ended up catching 8 from this small home in 2 days, then repaired and squirrel-proofed the soffit around the chimney.
BTW... I use primarily 5x5's, and sometimes the 4x4 or 4x3 simple squirrel traps that fit in the gutters. My standard mounting for 5x5's is with the Fields spring hooks. Might take a few extra minutes to set up with trap shelves, but with the super-quick trap changes it saves time overall.
