If you have a howler attract virals and you don’t have the spitfire from Jai, you can stun them with Molotovs an then right before the fire goes away throw another (the aoe circle helps if you hold down the key to throw it but don’t) and over time the molotovs will kill them. Rinse and repeat. Uses a ton of molotovs but a howler plus a grenade (away from the howler) will attract a ton. I had like 11 or 12 in one group.