I'd toss them. IMHO there's no way to ensure getting all the grit out of the lube without removing all the lube. My .22 barrels are worth more than 700 rounds of bulk .22lr ammo.
If your range doesn't have a dud bucket just pull the bullets and dump the powder before disposing. Grab the middle of the case with a pair of needle-nose pliers and grab the bullet with a pair of regular pliers. Bend the bullet to the side and it will come right out. Throw the bullet in your scrap lead bin and dump the powder to burn later.
The cases can be tossed in the trash or burnt in a campfire to get rid of the priming compound. Each one has about the same report as a small cap gun.
Proud member of the NRA and Texas State Rifle Association. Registered and active voter.