Ok heres the story...about every summer my 10 yr old QH starts to drool constantly. She dosnt have any problems with her teeth...does not spit her feed out, wont fight the bit when i ride her and whats werid is that she only does it in the summer. In the spring, fall and winter she stops and dosnt start back up till summer. And now she has my 5 yr old QH do it to and he dosnt have any problems with his teeth eaither. so im stumped at it and i would like some help with it. Thank You.