Hi Katie. In my opinion due to experience with mite outdoor and indoor at varying home locations Bug Bombs can assist and cant hurt but I would recommend adhereing to the more applicable scientific side of mites and apply treatment. Bug bombs are to generalised and you will kill beneficial insects which no doubt assist in benefitting the man made ecological environment. For mites you need specific products as they are not insects and they are very very vigilant. They also show widespread resistance to products due to their fast rate evolving. Purchase a miticide/ ovacide. The chemistry is designed to attack and kill or least reduce populations through varying methods i.e systemic, translaminar, suffocation, dehyration ( follow instructions). Sterilisng your environment is still a good move. If your 'green' use the varying products/ concoctions that are easily available and recommended on here. Neem oil, washing up liquid, chiili, garlic, isopryl alcohol (not enthanol). Keep humidity high and since orchids detest high temps, cool it otherwise you will help mites reproduce rapidly. Fingers crossed I have had no probs with mites in last couple of years except one suspicion on a cymbidium. I took precautionary action anyway. Locally in the area surrounding me mites are colonised all over outside so i advise you to take strict control environmentally as the buggers are airborne. Always mist under leaves and use varied media to assist in increasing humidity.