So just like it is frowned upon to pour oil down the drain it may be wise to use a separate bucket or container when lanolizing your wool covers. This is something I did not know or even think about when I entered the world of wool covers. I just assumed that the sink was the logical place to soak and lanolize wool covers and since I only owned 1-2 wool covers at this point, it was only every month or two that I even needed to lanolize them. Luckily, my pipes probably didn’t suffer any more build up that some of my body scrubs or beauty products have done over the years from this limited use.
The bottom line is that you know your pipes the best and it depends how many wool covers you own, lanolize and how often. It may not be worth the extra step for you if you only use a wool cover or two, but it’s not that much more effort to alleviate any build up that may form in your pipes over time. If you live in an older home, use many wool covers or are diapering multiple children simultaneously or one after another I highly encourage you consider lanolizing in a separate bucket if you don’t already. It’s really not that much more work and actually it frees up your sink for washing hands and being, well, a sink!