In a previous life, when I used to be responsible for waste collection
policy, in a large public meeting I asked the senior waste management
officer what householders should do with waste tubes and CFLs and
he said (with a bit of a sigh):
For the amount and frequency of fluorescent waste a typical household
disposes of, they should just be placed in the bin.

If you're chucking out multiple tubes weekly, that's when you need to
be worrying about things, but just put it in context.

JGH