.Answer:
<em>Direct object</em>
Explanation:
A gerund phrase (<em>scrubbing with stain remover</em>) is a type of phrase where the main word is a gerund (verb root + -ing). Gerund phrase always serves as a noun and that noun can have the function of a subject, indirect or direct object, predicate nominatives or object of a preposition.
In the given sentence the gerund phrase functions as a direct object where the noun (in this case gerund phrase - <em>scrubbing with stain remover</em>) is receiving the action of the verb<em> tried.</em>
(This is about a tiger, haha)
Its claws were so sharp, so they realized it's too dangerous to risk their lives to approach the tiger.