yes, they come with the small ziplocs. start off with keeping the ziploc closed. if you need to boost humidity a bit, you can open the ziploc. If you have a humidor that needs the humidity boosted quite a bit, you can take the pillow out of the ziploc. I also charged a pillow with 50/50, and its working quite well. I charged it with roughly 2 teaspoons of 50/50 mix. It is holding at 70% in a 5 cigar ziploc bag. I also tested pillows charged with 1 teaspoon water. Both Pillows are in the little ziplocs. 1 is being used in a clear lid cigar caddy so that i can see the readings. The other is in a 5 cigar size ziploc bag. Both are holding steady in the 69-70% range. I think that if you go light on the water, these are very safe for small airtight travel humidors. Open the humis up once a day, and it seems that these pillows will do a nice job for a 50 cent item.