Tear stains remedy

I use a comb to clean up his eyes & everything and I wipe his mouth too after his meals, but it still stains sometimes and is just damp all throughout. Tips & suggestions would surely help! (7 months old)

I use a comb to clean up his eyes & everything and I wipe his mouth too after his meals, but it still stains sometimes and is just damp all throughout. Tips & suggestions would surely help! (7 months old)