I cleaned mine ok with lots of tedious caution and a little flash light, but am hesitant to recommend it as a DIY service to others since it was harder than I imagined and since I believe many AC companies will come do an annual service with coil cleaning for around $150 (again, just guesstimate) and likely have a method more foolproof than my aerosol cleaner can and garden hose, plus they can look the system over and catch/fix any small issues before a home inspector would find them. 

Here is a YouTube video that shows exactly how to place the traps: https://youtu.be/H3aOa0Pe8kAThird, take a flashlight or a bright light and shine it under the car at night.

And the shingles probably last a little longer since the panels are blocking the UV.

Each tenant gets a free flashlight...

v=gwf2Cmgj0NQYou can find uv light at Petsmart and similar stores.

We didn't have pet fees, but we made sure that we walked the apartment, during move in, with a uv light to ensure everyone knew that we would be charging for animal damages at move out.

The instructor recommended a tactical flashlight.

Look, '08' was a "perfect storm", it was NOT just a 1 thing, it was about 42 things all perfectly coming together into 1 singular point, like a million flashlights on 1 fixed point creating a laser effect.