I got me one of these and they are very gamable. Well for us it is anyways lol. At our larger feild we have pretty large areas of open ground to cross from one wooded area to the next . makes for the perfect place to make tha ants run! lol . the shells are really light and tend to float to the ground slowly enough for you to move if it's right on you. it's just water and a rubber seal. you fill it with a 12oz tube of co2 and about 350ml of water (water first then seal it ,then co2). Comes with the charger for the co2. it's a fun new element . I gotr mine from Shrike and it was totaly worth it!
PROUD TO BE OPTION B
Level 2 sinper/ night operator