You do NOT NOT NOT leave hazardous chemicals in spray bottles that look just like perfume atomizers. NO FBI person will do this. ALL such chemicals WILL be in clearly labeled hazardous material standardized containers. NO WAY does Monk spray a 'cleaning spritzer' of highly caustic chemical onto a TV screen by mistaking it for water.
Also, there is no fucking pet store in SF where you can just walk in and buy a ferret. Thanks to paranoia that domesticated Ferrets would destroy California, since 1895 it has been illegal to import, sell or OWN a ferret in California. No pet store sells them.
The 'drink coaster' joke is also very, very old. Monk has seen computers used before, many many times. He isn't a stupid man and will know the difference between a CD slot and a drink coaster.
Feh. Bad writing episode.
EDIT: "I want all street musicians off the street except one!"
IN SAN FRANCISCO.
The writers have lost sight of the fact that the humor in Mr. Monk's life arises from the absurdities of real life, not from stupid cartoon caricatures being even more broken that Mr. Monk.
Is there a way to give these guys an F- ??