“Sticky stuff remover” is wonderful travelsafar Scrape off as much as you can first ( it’s easier if you can put your trousers in the freezer for a while and the gum will harden) then dab/ rub in circular motion with SSR . It’s worked for me a few times .
Any ideas how to do this, unfortunately sat on a park bench without looking and have gum stuck on my fav trousers.Have tried putting item in freezer which helped to chip away some, but there is a white mark left in the fabric!!!