Tone Seeker: The lifetime of Comply Foam Tips varies a lot from person to person. Some tips are to: 1. Keep your ears clean (ear wax and other gunk deteriorate the foam). 2. Don't toss your tips in your gym bag (don't trash them, basically). 3. You can clean them with warm water and a cloth (don't use anything with alcohol or other cleaning products).
They're very durable though, despite being foam. There are variables even in our offices. Personally, they last me longer than most.
Well... not just your ears, but your fingers must be clean. Don't forget, you're rolling - compressing them between your fingers and if they're dirty, the tips will get dirty.
Also, being a bit neurotic about these two practices (ears and fingers clean), my Comply's last quite a while (a few months of daily wear, maybe...).
One reason I am so festidious about this is because I don't like to clean the Comply tips. They seem to degrade slightly and never fully regain their firmness and solid fit. Full dislosure... I think I always used a mild soap, so that could be the reason.
I'll have to try the 'just plain warm water' method.