Just found a screamer of a legal clause that deals with what DaveM above calls 'rubbish removal' but which this clause delicately refers to as 'belongings'
Belongings and junk to be removed
The Sellers must remove all their belongings XE "belongings" from the Property, including: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _, prior to 9.00am on the last business day before the Settlement Date. If at that time the Buyers are not satisfied that the Sellers have done this, then the Buyers can withhold $__________ from settlement (in the Buyers' Solicitor's Trust Account), and this money can be drawn from trust to pay invoices for the actual costs of disposal of the remaining items, with any money left over then paid to the Sellers.
(NOTES: This clause can be tough on Sellers. It could be used to benefit Buyers, for example, where there are a number of car bodies
on the property, or if there is an unusual quantity of "junk".
)