Yes, you can still make a purchase at Home Depot even if you don't have your credit card with you. Home Depot accepts various payment methods, including cash, debit cards, and checks (with a valid ID). If you don't have your credit card available, you can use an alternative payment method to complete your purchase.
It's worth noting that Home Depot may have specific policies or restrictions on certain payment methods, so it's always a good idea to check with your local store or visit their website to familiarize yourself with their accepted payment options and any requirements or limitations that may be in place.