I live in Ecuador and yes we use USD although we use mix of US and Ecudorian minted coins, and several era’s of it. For example it’s not uncommon to still get state back quarters and 90’s era nickels. The Banco Central de Ecuador, will even let you exchange broken or damaged bills and coins from the US for either Ecuadorian or US based coin age.
I live in Ecuador and yes we use USD although we use mix of US and Ecudorian minted coins, and several era’s of it. For example it’s not uncommon to still get state back quarters and 90’s era nickels. The Banco Central de Ecuador, will even let you exchange broken or damaged bills and coins from the US for either Ecuadorian or US based coin age.