I have 3 pets. All pets tier 2 but unable to collect boxes completely

I moved to this mobile game due to thinking it would be a little less stressing than the PC version. To my surprise the pets are basically useless, so I tiered them up to 2 and still useless. Pet time for pickup is useless, so might as well pick up stuff on your own. Do not waste your hard-earned funds on pets in the mobile version in-game or real funds, the time to pick up is terrible.