Fumigation in Rancho Santa Margarita has varying prices depending on the size of the area that will be fumigated. On average, Rancho Santa Margarita fumigation can cost around $1 to $3 per square foot or a total of $2,000 to $6,000 for a 2,000 square foot of area coverage. The size of your home contributes greatly to the cost of the fumigation. The lethal gases used in fumigation can be effective if the right amount is applied. This means that the bigger your home, the larger will be the amount of gas to be used that will translate to higher fumigation cost. The kind of pest can also have an impact on the cost of Rancho Santa Margarita fumigation. For example, eliminating cockroaches and ants is cheaper than termite fumigation in Rancho Santa Margarita.