Dumping liquids on the carpet?

Audi

Over the last month Malachai has started just dumping all his drinks and even our drinks on the carpet. It's starting to drive us insane. The carpet gets sticky and we've had to borrow a carpet shampooer to get the milk out of the carpets. He won't stop. We've tried timeouts, talking to him about it, giving him back his sippy cups.. he just takes the lids off them and does the same thing. Anyone else's babe do this or just mine? 🤦