Spiders

[eman]

Any closet entomologist on board?
This spring i am having a bad problem w/ brown recluse spiders.
Not the little dime size ones i usually see around the wood pile,In the last 4 days i have killed two that were as big as a 50cent piece.
One under my carport between 2 freezers and then last night one on my dogs bed by the front door.
never seen one inside b4 ? Talked to my vet today to find out what would happen if a recluse that size bit my dog and the answer was more than likely he would be put down to keep from dying avery painful death.
Any one got a reasonable idea as to why they are out and giant size all of a sudden???