the grow space def needs taking care of before your next run but if your grow space is in a shed & you need to walk through your garden to get to the shed your efforts in cleaning your room might only have a minor effect on possible re infestation , your IPM approach might need to be looked at from several angles
if your considering Abamectin usage you might wanna make sure you mask / suit up if your gunna be spraying that stuff round or at least do your own research on it before use
" abamectin insecticide dangers to humans when spraying "
" Abamectin insecticide can be dangerous to humans if inhaled, swallowed, or absorbed through the skin during spraying. Symptoms of poisoning can include dilated pupils, nausea, vomiting, tremors, seizures, and in severe cases, coma and death "
i believe a large dose or prolonged use is where the major dangers lie , either way it def needs thoughtful attention before using