here in wisconsin if it leaves the ground or explodes (or both) it is illegal to have them without a permit. bottle rockets, black cat firecrackers, roman candles, mortars all need a permit to possess. but (get this) you can buy them at roadside stands withouta permit. but most of the stands can sell you a permit. not sure how much they are but a few years back i bought one for $15.00. so you can buy them without a permit, but you cant have them without it.
make sense??? i thought not..... :scratchhe