Answer: direct object
Step-by-step explanation:
A gerund is a noun that includes the verb root, adding -ing to the end of the word. A full gerund phrase includes a gerund and its modifiers. A gerund phrase works as a noun and it can be a subject, an object, or a predicate nominative in the sentence.
In this example, the gerund scrubbing is acting as the direct object of the verb tried.