This 4L size is best kept under the kitchen sink or the hall closet. Best used for refilling smaller bottles as they get low.
Colloidal Silver for Pets – Large – Refill Size
BEST VALUE, BEST PRICE! $1.48/oz
$20 for 4oz(118ml) = $5/oz
$40 for 16oz(473ml) = $2.50/oz
$200 for 135oz(4L) = $1.48/oz
Colloidal Silver is best kept out of direct sunlight and store away from any electronic equipment for best shelf life and potency.