Those look like flying ants or possibly termites which are swarming. I don't think they would be any danger to your tortoise. However, if you have an exterminator come, the chemicals they spray or spread around the area could linger for some time and be more of a risk than the bugs themselves.My tortoise enclosure has become invades with bugs. Should I move my tortoises indoors until I can have an exterminator fix the problem? Not sure what they are?View attachment 358828