I forgot to mention, it is also great for removing lint, pet hair, dandruff, etc from clothing, just wrap some around your hand, sticky side out, and roll it over the areas that need cleaning up. Also good for cleaning grit, dust, metal filings, etc off a workbench or desk top.
And, if the mother-in-law is getting too vociferous or boisterous, well, figure it out...
/ed brown