In this case, legally, household chores (especially in exchange for accommodations) may still count as work and be technically disallowed by their visa. This is not uncommon and is the case in many other countries as well.
If you ever watch those border security shows, they often show people having visas denied for exactly the same reason, and whether it's the US or other places like Australia and UK.
If you ever watch those border security shows, they often show people having visas denied for exactly the same reason, and whether it's the US or other places like Australia and UK.