how do indoor cats catch fleas?

[foxtongue]

Arrived home to a chemical tang, even with the windows wide open. Three fleas were found in the last four weeks, which is two fleas too many, so David took it upon himself to powder the carpets and wash, collar, and pest-poison the cats while I was away. Given that they have never had a bath before, I can't help but feel he was terribly brave.

Also, for the record, apparently off-the-shelf hairball medicine is marketed as "cat lube".